diff --git a/frontend/app/(main)/admin/approvalBox/page.tsx b/frontend/app/(main)/admin/approvalBox/page.tsx
index f0cd1438..1d2e11d5 100644
--- a/frontend/app/(main)/admin/approvalBox/page.tsx
+++ b/frontend/app/(main)/admin/approvalBox/page.tsx
@@ -254,22 +254,36 @@ function ReceivedTab() {
 
   const [processOpen, setProcessOpen] = useState(false);
   const [selectedLine, setSelectedLine] = useState<ApprovalLine | null>(null);
+  const [selectedRequest, setSelectedRequest] = useState<ApprovalRequest | null>(null);
+  const [detailLoading, setDetailLoading] = useState(false);
   const [comment, setComment] = useState("");
   const [isProcessing, setIsProcessing] = useState(false);
 
   const fetchPending = useCallback(async () => {
     setLoading(true);
-    const res = await getMyPendingApprovals();
-    if (res.success && res.data) setPendingLines(res.data);
+    try {
+      const res = await getMyPendingApprovals();
+      if (res.success && res.data) setPendingLines(res.data);
+    } catch {
+      setPendingLines([]);
+    }
     setLoading(false);
   }, []);
 
   useEffect(() => { fetchPending(); }, [fetchPending]);
 
-  const openProcess = (line: ApprovalLine) => {
+  const openProcess = async (line: ApprovalLine) => {
     setSelectedLine(line);
+    setSelectedRequest(null);
     setComment("");
     setProcessOpen(true);
+    // 결재 상세 내용(결재선 포함) 비동기 로드
+    if (line.request_id) {
+      setDetailLoading(true);
+      const res = await getApprovalRequest(line.request_id);
+      if (res.success && res.data) setSelectedRequest(res.data);
+      setDetailLoading(false);
+    }
   };
 
   const handleProcess = async (action: "approved" | "rejected") => {
@@ -342,14 +356,14 @@ function ReceivedTab() {
 
       {/* 결재 처리 모달 */}
       <Dialog open={processOpen} onOpenChange={setProcessOpen}>
-        <DialogContent className="max-w-[95vw] sm:max-w-[450px]">
+        <DialogContent className="max-w-[95vw] sm:max-w-[520px]">
           <DialogHeader>
             <DialogTitle className="text-base sm:text-lg">결재 처리</DialogTitle>
             <DialogDescription className="text-xs sm:text-sm">
               {selectedLine?.title}
             </DialogDescription>
           </DialogHeader>
-          <div className="space-y-3">
+          <div className="max-h-[55vh] space-y-4 overflow-y-auto">
             <div className="grid grid-cols-2 gap-3 text-sm">
               <div>
                 <span className="text-muted-foreground text-xs">요청자</span>
@@ -359,18 +373,84 @@ function ReceivedTab() {
                 <span className="text-muted-foreground text-xs">결재 단계</span>
                 <p className="mt-1 font-medium">{selectedLine?.step_order}차 결재</p>
               </div>
+              {selectedLine?.target_table && (
+                <div>
+                  <span className="text-muted-foreground text-xs">대상 테이블</span>
+                  <p className="mt-1 font-medium">{selectedLine.target_table}</p>
+                </div>
+              )}
+              <div>
+                <span className="text-muted-foreground text-xs">요청일</span>
+                <p className="mt-1">{formatDate(selectedLine?.request_created_at || selectedLine?.created_at)}</p>
+              </div>
             </div>
+
+            {/* 결재선 상세 */}
+            {detailLoading ? (
+              <div className="flex items-center justify-center py-4">
+                <Loader2 className="text-muted-foreground h-4 w-4 animate-spin" />
+                <span className="text-muted-foreground ml-2 text-xs">결재선 로딩 중...</span>
+              </div>
+            ) : selectedRequest?.lines && selectedRequest.lines.length > 0 && (
+              <div>
+                <span className="text-muted-foreground text-xs">전체 결재선</span>
+                <div className="mt-2 space-y-2">
+                  {selectedRequest.lines
+                    .sort((a, b) => a.step_order - b.step_order)
+                    .map((line) => (
+                      <div
+                        key={line.line_id}
+                        className={`flex items-center justify-between rounded-md border p-2 ${
+                          line.line_id === selectedLine?.line_id ? "border-primary bg-primary/5" : "bg-muted/30"
+                        }`}
+                      >
+                        <div className="flex items-center gap-2">
+                          <Badge
+                            variant={line.line_id === selectedLine?.line_id ? "default" : "outline"}
+                            className="text-[10px]"
+                          >
+                            {line.step_order}차
+                          </Badge>
+                          <span className="text-sm font-medium">{line.approver_name || line.approver_id}</span>
+                          {line.approver_position && (
+                            <span className="text-muted-foreground text-xs">({line.approver_position})</span>
+                          )}
+                          {line.line_id === selectedLine?.line_id && (
+                            <Badge variant="secondary" className="text-[10px]">내 차례</Badge>
+                          )}
+                        </div>
+                        <div className="flex items-center gap-2">
+                          <StatusBadge status={line.status} />
+                          {line.processed_at && (
+                            <span className="text-muted-foreground text-[10px]">{formatDate(line.processed_at)}</span>
+                          )}
+                        </div>
+                      </div>
+                    ))}
+                </div>
+              </div>
+            )}
+
+            {/* 의견 입력 */}
             <div>
-              <Label className="text-xs sm:text-sm">의견</Label>
+              <Label className="text-xs sm:text-sm">결재 의견</Label>
               <Textarea
                 value={comment}
                 onChange={(e) => setComment(e.target.value)}
                 placeholder="결재 의견을 입력하세요 (선택사항)"
-                className="min-h-[80px] text-xs sm:text-sm"
+                className="mt-1 min-h-[80px] text-xs sm:text-sm"
               />
             </div>
           </div>
           <DialogFooter className="gap-2 sm:gap-0">
+            <Button
+              variant="outline"
+              onClick={() => setProcessOpen(false)}
+              disabled={isProcessing}
+              className="h-8 flex-1 text-xs sm:h-10 sm:flex-none sm:text-sm"
+            >
+              취소
+            </Button>
             <Button
               variant="destructive"
               onClick={() => handleProcess("rejected")}