diff --git a/electron/services/annualReportService.ts b/electron/services/annualReportService.ts
index bc4d1ed..88d062e 100644
--- a/electron/services/annualReportService.ts
+++ b/electron/services/annualReportService.ts
@@ -193,7 +193,9 @@ class AnnualReportService {
     if (!raw) return ''
     if (typeof raw === 'string') {
       if (raw.length === 0) return ''
-      if (this.looksLikeHex(raw)) {
+      // 只有当字符串足够长（超过16字符）且看起来像 hex 时才尝试解码
+      // 短字符串（如 "123456" 等纯数字）容易被误判为 hex
+      if (raw.length > 16 && this.looksLikeHex(raw)) {
         const bytes = Buffer.from(raw, 'hex')
         if (bytes.length > 0) return this.decodeBinaryContent(bytes)
       }
diff --git a/electron/services/chatService.ts b/electron/services/chatService.ts
index 22670d0..eade809 100644
--- a/electron/services/chatService.ts
+++ b/electron/services/chatService.ts
@@ -2227,7 +2227,9 @@ class ChatService {
       if (raw.length === 0) return ''
 
       // 检查是否是 hex 编码
-      if (this.looksLikeHex(raw)) {
+      // 只有当字符串足够长（超过16字符）且看起来像 hex 时才尝试解码
+      // 短字符串（如 "123456" 等纯数字）容易被误判为 hex
+      if (raw.length > 16 && this.looksLikeHex(raw)) {
         const bytes = Buffer.from(raw, 'hex')
         if (bytes.length > 0) {
           const result = this.decodeBinaryContent(bytes, raw)
diff --git a/electron/services/dualReportService.ts b/electron/services/dualReportService.ts
index a80c9e6..f62f947 100644
--- a/electron/services/dualReportService.ts
+++ b/electron/services/dualReportService.ts
@@ -106,7 +106,9 @@ class DualReportService {
     if (!raw) return ''
     if (typeof raw === 'string') {
       if (raw.length === 0) return ''
-      if (this.looksLikeHex(raw)) {
+      // 只有当字符串足够长（超过16字符）且看起来像 hex 时才尝试解码
+      // 短字符串（如 "123456" 等纯数字）容易被误判为 hex
+      if (raw.length > 16 && this.looksLikeHex(raw)) {
         const bytes = Buffer.from(raw, 'hex')
         if (bytes.length > 0) return this.decodeBinaryContent(bytes)
       }
diff --git a/electron/services/exportService.ts b/electron/services/exportService.ts
index b9823a5..c4fc8a7 100644
--- a/electron/services/exportService.ts
+++ b/electron/services/exportService.ts
@@ -270,7 +270,8 @@ class ExportService {
       if (/^[0-9]+$/.test(raw)) {
         return raw
       }
-      if (this.looksLikeHex(raw)) {
+      // 只有当字符串足够长（超过16字符）且看起来像 hex 时才尝试解码
+      if (raw.length > 16 && this.looksLikeHex(raw)) {
         const bytes = Buffer.from(raw, 'hex')
         if (bytes.length > 0) return this.decodeBinaryContent(bytes)
       }