diff --git a/src/views/ValueForum/components/CreatePostModal.js b/src/views/ValueForum/components/CreatePostModal.js
index 41ee02af..2362e720 100644
--- a/src/views/ValueForum/components/CreatePostModal.js
+++ b/src/views/ValueForum/components/CreatePostModal.js
@@ -79,18 +79,18 @@ const CreatePostModal = ({ isOpen, onClose, onPostCreated }) => {
         return;
       }
 
-      // 检查文件大小（5MB 限制）
-      if (file.size > 5 * 1024 * 1024) {
-        reject(new Error('图片大小不能超过 5MB'));
+      // 检查文件大小（10MB 限制，给压缩留空间）
+      if (file.size > 10 * 1024 * 1024) {
+        reject(new Error('图片大小不能超过 10MB'));
         return;
       }
 
       const reader = new FileReader();
 
-      reader.onload = (e) => {
-        const img = new Image();
+      reader.onload = function(e) {
+        const img = document.createElement('img');
 
-        img.onload = () => {
+        img.onload = function() {
           try {
             // 创建 canvas 进行压缩
             const canvas = document.createElement('canvas');
@@ -101,10 +101,10 @@ const CreatePostModal = ({ isOpen, onClose, onPostCreated }) => {
             const maxDimension = 1920;
             if (width > maxDimension || height > maxDimension) {
               if (width > height) {
-                height = (height * maxDimension) / width;
+                height = Math.round((height * maxDimension) / width);
                 width = maxDimension;
               } else {
-                width = (width * maxDimension) / height;
+                width = Math.round((width * maxDimension) / height);
                 height = maxDimension;
               }
             }
@@ -115,45 +115,35 @@ const CreatePostModal = ({ isOpen, onClose, onPostCreated }) => {
             const ctx = canvas.getContext('2d');
             ctx.drawImage(img, 0, 0, width, height);
 
-            // 转换为 JPEG 格式，质量 0.8（压缩）
-            canvas.toBlob(
-              (blob) => {
-                if (!blob) {
-                  reject(new Error('图片压缩失败'));
-                  return;
-                }
+            // 转换为 Data URL（JPEG 格式，质量 0.8）
+            try {
+              const compressedDataUrl = canvas.toDataURL('image/jpeg', 0.8);
 
-                const compressedReader = new FileReader();
+              // 计算压缩率
+              const originalSize = file.size;
+              const compressedSize = Math.round((compressedDataUrl.length * 3) / 4); // Base64 解码后的大小
 
-                compressedReader.onloadend = () => {
-                  console.log(
-                    `图片压缩: ${(file.size / 1024).toFixed(2)}KB -> ${(blob.size / 1024).toFixed(2)}KB`
-                  );
-                  resolve(compressedReader.result);
-                };
+              console.log(
+                `图片压缩: ${(originalSize / 1024).toFixed(2)}KB -> ${(compressedSize / 1024).toFixed(2)}KB`
+              );
 
-                compressedReader.onerror = () => {
-                  reject(new Error('压缩后图片读取失败'));
-                };
-
-                compressedReader.readAsDataURL(blob);
-              },
-              'image/jpeg',
-              0.8
-            );
+              resolve(compressedDataUrl);
+            } catch (error) {
+              reject(new Error('图片压缩失败'));
+            }
           } catch (error) {
             reject(new Error(`图片处理失败: ${error.message}`));
           }
         };
 
-        img.onerror = () => {
+        img.onerror = function() {
           reject(new Error('图片加载失败'));
         };
 
         img.src = e.target.result;
       };
 
-      reader.onerror = () => {
+      reader.onerror = function() {
         reject(new Error('文件读取失败'));
       };