diff --git a/backend/src/main/java/com/srsystem/dto/CreateTicketRequest.java b/backend/src/main/java/com/srsystem/dto/CreateTicketRequest.java
index 88f87d3..71bca91 100644
--- a/backend/src/main/java/com/srsystem/dto/CreateTicketRequest.java
+++ b/backend/src/main/java/com/srsystem/dto/CreateTicketRequest.java
@@ -11,6 +11,8 @@ public record CreateTicketRequest(
         @NotNull TicketCategory category,
         @NotNull TicketPriority priority,
         @NotBlank String title,
-        @NotBlank String description
+        @NotBlank String description,
+        @Nullable String attachmentUrl,
+        @Nullable String attachmentName
 ) {
 }
diff --git a/backend/src/main/java/com/srsystem/dto/IssueTicket.java b/backend/src/main/java/com/srsystem/dto/IssueTicket.java
index 7a4f54e..8ba7f32 100644
--- a/backend/src/main/java/com/srsystem/dto/IssueTicket.java
+++ b/backend/src/main/java/com/srsystem/dto/IssueTicket.java
@@ -20,6 +20,8 @@ public record IssueTicket(
         LocalDateTime resolvedAt,
         String resolutionNote,
         boolean slaWarnFlag,
-        LocalDateTime createdAt
+        LocalDateTime createdAt,
+        String attachmentUrl,
+        String attachmentName
 ) {
 }
diff --git a/backend/src/main/java/com/srsystem/entity/Ticket.java b/backend/src/main/java/com/srsystem/entity/Ticket.java
index 03207bd..d15adb5 100644
--- a/backend/src/main/java/com/srsystem/entity/Ticket.java
+++ b/backend/src/main/java/com/srsystem/entity/Ticket.java
@@ -66,6 +66,12 @@ public class Ticket extends BaseEntity {
     @Column(name = "resolution_note", columnDefinition = "TEXT")
     private String resolutionNote;
 
+    @Column(name = "attachment_url", length = 500)
+    private String attachmentUrl;
+
+    @Column(name = "attachment_name", length = 255)
+    private String attachmentName;
+
     @Column(name = "sla_warn_flag", nullable = false, length = 1)
     private char slaWarnFlag = 'N';
 }
diff --git a/backend/src/main/java/com/srsystem/service/TicketService.java b/backend/src/main/java/com/srsystem/service/TicketService.java
index 2cdd188..6970449 100644
--- a/backend/src/main/java/com/srsystem/service/TicketService.java
+++ b/backend/src/main/java/com/srsystem/service/TicketService.java
@@ -66,7 +66,9 @@ public class TicketService {
                 .title(request.title())
                 .description(request.description())
                 .status(TicketStatus.OPEN)
-                .slaWarnFlag('N');
+                .slaWarnFlag('N')
+                .attachmentUrl(request.attachmentUrl())
+                .attachmentName(request.attachmentName());
 
         if (request.projectId() != null) {
             Project project = projectRepository.findById(request.projectId())
@@ -186,7 +188,7 @@ public class TicketService {
     private IssueTicket toIssueTicket(Ticket ticket) {
         return new IssueTicket(
                 ticket.getTicketId(),
-                ticket.getProject().getProjectName(),
+                ticket.getProject() != null ? ticket.getProject().getProjectName() : null,
                 ticket.getRequester().getName(),
                 ticket.getAssignee() != null ? ticket.getAssignee().getName() : null,
                 ticket.getCategory(),
@@ -198,7 +200,9 @@ public class TicketService {
                 ticket.getResolvedAt(),
                 ticket.getResolutionNote(),
                 ticket.getSlaWarnFlag() == 'Y',
-                ticket.getCreatedAt()
+                ticket.getCreatedAt(),
+                ticket.getAttachmentUrl(),
+                ticket.getAttachmentName()
         );
     }
 }
diff --git a/backend/src/main/resources/db/migration/V19__add_ticket_attachment.sql b/backend/src/main/resources/db/migration/V19__add_ticket_attachment.sql
new file mode 100644
index 0000000..6a872f5
--- /dev/null
+++ b/backend/src/main/resources/db/migration/V19__add_ticket_attachment.sql
@@ -0,0 +1,2 @@
+ALTER TABLE tb_ticket ADD COLUMN IF NOT EXISTS attachment_url VARCHAR(500);
+ALTER TABLE tb_ticket ADD COLUMN IF NOT EXISTS attachment_name VARCHAR(255);
diff --git a/src/app/(main)/issues/[id]/page.tsx b/src/app/(main)/issues/[id]/page.tsx
index 55b8520..cb8849b 100644
--- a/src/app/(main)/issues/[id]/page.tsx
+++ b/src/app/(main)/issues/[id]/page.tsx
@@ -119,20 +119,36 @@ export default function IssueDetailPage({ params }: { params: Promise<{ id: stri
                 <p className="text-sm text-text-main whitespace-pre-wrap">{ticket.description}</p>
               </div>
 
+              {ticket.attachmentUrl && (
+                <div className="bg-indigo-50 border border-indigo-200 rounded-xl px-4 py-3 text-sm flex items-center gap-3">
+                  <Paperclip className="w-4 h-4 text-indigo-600" />
+                  <div className="flex-1">
+                    <p className="font-semibold text-indigo-800">첨부 파일</p>
+                    <p className="text-indigo-600 text-xs">{ticket.attachmentName || ticket.attachmentUrl.split('/').pop()}</p>
+                  </div>
+                  <a href={ticket.attachmentUrl} target="_blank" rel="noopener noreferrer"
+                    className="px-3 py-1.5 bg-white rounded-lg text-xs font-semibold text-indigo-700 border border-indigo-200 hover:bg-indigo-100 transition-colors">
+                    다운로드
+                  </a>
+                </div>
+              )}
+
               {ticket.category === 'VACATION' && (
                 <div className="bg-amber-50 border border-amber-200 rounded-xl px-4 py-3 text-sm">
                   <p className="font-semibold text-amber-800">휴가 신청</p>
-                  <p className="text-amber-700 mt-1">세부 일정은 description을 확인하세요.</p>
+                  <p className="text-amber-700 mt-1">해당 티켓은 휴가 신청 건입니다. 휴가 기간 등 세부 내용은 description을 확인하세요.</p>
                 </div>
               )}
               {ticket.category === 'EXPENSE' && (
                 <div className="bg-green-50 border border-green-200 rounded-xl px-4 py-3 text-sm">
                   <p className="font-semibold text-green-800">비용 청구</p>
+                  <p className="text-green-700 mt-1">비용 청구 건입니다. 금액 및 영수증은 description과 첨부파일을 확인하세요.</p>
                 </div>
               )}
               {ticket.category === 'EQUIPMENT_REQUEST' && (
                 <div className="bg-purple-50 border border-purple-200 rounded-xl px-4 py-3 text-sm">
                   <p className="font-semibold text-purple-800">장비 요청</p>
+                  <p className="text-purple-700 mt-1">장비 요청 건입니다. 요청 장비 및 긴급도는 description을 확인하세요.</p>
                 </div>
               )}
             </div>
diff --git a/src/app/(main)/issues/page.tsx b/src/app/(main)/issues/page.tsx
index 977c42d..e553c58 100644
--- a/src/app/(main)/issues/page.tsx
+++ b/src/app/(main)/issues/page.tsx
@@ -93,7 +93,7 @@ function CreateTicketModal({ onClose, onSuccess }: { onClose: () => void; onSucc
         extras.push(`\n\n[휴가 신청]\n시작일: ${extraFields.startDate}\n종료일: ${extraFields.endDate}`);
       }
       if (formData.category === 'EXPENSE') {
-        extras.push(`\n\n[비용 청구]\n금액: ${extraFields.amount}원`);
+        extras.push(`\n\n[비용 청구]\n금액: ${extraFields.amount}원${extraFields.receiptUrl ? `\n영수증: ${extraFields.receiptUrl}` : ''}`);
       }
       if (formData.category === 'EQUIPMENT_REQUEST') {
         extras.push(`\n\n[장비 요청]\n장비 유형: ${extraFields.equipmentType}\n긴급도: ${extraFields.urgency}`);
@@ -109,6 +109,8 @@ function CreateTicketModal({ onClose, onSuccess }: { onClose: () => void; onSucc
         category: formData.category as TicketCategory,
         priority: formData.priority as TicketPriority,
         projectId: formData.projectId ? parseInt(formData.projectId) : undefined,
+        attachmentUrl: extraFields.receiptUrl || undefined,
+        attachmentName: extraFields.receiptName || undefined,
       });
       onSuccess();
       onClose();
@@ -158,22 +160,6 @@ function CreateTicketModal({ onClose, onSuccess }: { onClose: () => void; onSucc
             {renderFieldError('title')}
           </div>
 
-          <div>
-            <label className="block text-sm font-medium text-text-main mb-1.5">
-              Description <span className="text-red-500">*</span>
-            </label>
-            <textarea
-              value={formData.description}
-              onChange={(e) => updateField('description', e.target.value)}
-              className={`w-full px-3 py-2.5 border rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary resize-none ${
-                fieldErrors.description ? 'border-error' : 'border-border'
-              }`}
-              placeholder="Detailed explanation, error logs, steps to reproduce..."
-              rows={4}
-            />
-            {renderFieldError('description')}
-          </div>
-
           <div className="grid grid-cols-2 gap-4">
             <div>
               <label className="block text-sm font-medium text-text-main mb-1.5">Category</label>
@@ -220,21 +206,24 @@ function CreateTicketModal({ onClose, onSuccess }: { onClose: () => void; onSucc
             </div>
           </div>
 
-          <div>
-            <label className="block text-sm font-medium text-text-main mb-1.5">Project</label>
-            <select
-              value={formData.projectId}
-              onChange={(e) => updateField('projectId', e.target.value)}
-              className="w-full px-3 py-2.5 border border-border rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary bg-white"
-            >
-              <option value="">해당 없음</option>
-              {projects.map((p) => (
-                <option key={p.projectId} value={p.projectId}>
-                  {p.projectName}
-                </option>
-              ))}
-            </select>
-          </div>
+          {/* Project: only for project-related categories */}
+          {['BUG', 'FEATURE', 'SUPPORT', 'QA'].includes(formData.category) && (
+            <div>
+              <label className="block text-sm font-medium text-text-main mb-1.5">Project</label>
+              <select
+                value={formData.projectId}
+                onChange={(e) => updateField('projectId', e.target.value)}
+                className="w-full px-3 py-2.5 border border-border rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary bg-white"
+              >
+                <option value="">해당 없음</option>
+                {projects.map((p) => (
+                  <option key={p.projectId} value={p.projectId}>
+                    {p.projectName}
+                  </option>
+                ))}
+              </select>
+            </div>
+          )}
 
           {formData.category === 'VACATION' && (
             <div className="grid grid-cols-2 gap-4">
@@ -270,21 +259,44 @@ function CreateTicketModal({ onClose, onSuccess }: { onClose: () => void; onSucc
           )}
 
           {formData.category === 'EXPENSE' && (
-            <div>
-              <label className="block text-sm font-medium text-text-main mb-1.5">
-                금액 (원) <span className="text-red-500">*</span>
-              </label>
-              <input
-                type="number"
-                value={extraFields.amount || ''}
-                onChange={(e) => updateExtraField('amount', e.target.value)}
-                className={`w-full px-3 py-2.5 border rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary ${
-                  fieldErrors.amount ? 'border-error' : 'border-border'
-                }`}
-                placeholder="0"
-              />
-              {renderFieldError('amount')}
-            </div>
+            <>
+              <div>
+                <label className="block text-sm font-medium text-text-main mb-1.5">
+                  금액 (원) <span className="text-red-500">*</span>
+                </label>
+                <input
+                  type="number"
+                  value={extraFields.amount || ''}
+                  onChange={(e) => updateExtraField('amount', e.target.value)}
+                  className={`w-full px-3 py-2.5 border rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary ${
+                    fieldErrors.amount ? 'border-error' : 'border-border'
+                  }`}
+                  placeholder="0"
+                />
+                {renderFieldError('amount')}
+              </div>
+              <div>
+                <label className="block text-sm font-medium text-text-main mb-1.5">영수증</label>
+                <input type="file" accept="image/*,.pdf" onChange={async (e) => {
+                  const file = e.target.files?.[0];
+                  if (!file) return;
+                  updateExtraField('receiptName', file.name);
+                  try {
+                    const form = new FormData();
+                    form.append('file', file);
+                    const token = localStorage.getItem('accessToken');
+                    const res = await fetch('/api/v1/files/upload', {
+                      method: 'POST', headers: token ? {Authorization: `Bearer ${token}`} : {}, body: form,
+                    });
+                    const json = await res.json();
+                    if (json.success) updateExtraField('receiptUrl', json.data);
+                  } catch { updateExtraField('receiptUrl', ''); }
+                }} className="w-full text-sm" />
+                {extraFields.receiptName && (
+                  <p className="mt-1 text-xs text-text-muted">📎 {extraFields.receiptName}</p>
+                )}
+              </div>
+            </>
           )}
 
           {formData.category === 'EQUIPMENT_REQUEST' && (
@@ -325,6 +337,22 @@ function CreateTicketModal({ onClose, onSuccess }: { onClose: () => void; onSucc
             </div>
           )}
 
+          <div>
+            <label className="block text-sm font-medium text-text-main mb-1.5">
+              Description <span className="text-red-500">*</span>
+            </label>
+            <textarea
+              value={formData.description}
+              onChange={(e) => updateField('description', e.target.value)}
+              className={`w-full px-3 py-2.5 border rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary resize-none ${
+                fieldErrors.description ? 'border-error' : 'border-border'
+              }`}
+              placeholder="Detailed explanation, error logs, steps to reproduce..."
+              rows={4}
+            />
+            {renderFieldError('description')}
+          </div>
+
           <div className="flex justify-end space-x-3 pt-4">
             <button
               type="button"
diff --git a/src/types/index.ts b/src/types/index.ts
index 9ec36a9..f22a635 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -128,7 +128,7 @@ export interface DispatchHistory {
 // ============================================
 export interface IssueTicket {
   ticketId: number;
-  projectId: number;
+  projectId?: number;
   projectName?: string;
   requesterId: number;
   requesterName?: string;
@@ -146,6 +146,8 @@ export interface IssueTicket {
   isImminent?: boolean;
   createdAt: string;
   updatedAt: string;
+  attachmentUrl?: string;
+  attachmentName?: string;
 }
 
 export interface TicketComment {