diff --git a/src/services/httpService.ts b/src/services/httpService.ts
index d86885d..e8d4d1f 100644
--- a/src/services/httpService.ts
+++ b/src/services/httpService.ts
@@ -140,9 +140,13 @@ class HttpService {
           this.hideLoadingTimer = null
         }
 
-        // 延时300ms后隐藏loading，避免频繁切换
+        // 延时 800ms 后隐藏 loading，避免频繁切换；捕获 hideLoading 失败（如 toast 已被关闭）避免报错打断流程
         this.hideLoadingTimer = setTimeout(() => {
-          Taro.hideLoading()
+          try {
+            Taro.hideLoading()
+          } catch (e) {
+            // 忽略 "toast can't be found" 等，避免发布后分享等流程报错
+          }
           this.currentLoadingText = ''
           this.hideLoadingTimer = null
         }, 800)
diff --git a/src/utils/genPoster.ts b/src/utils/genPoster.ts
index 8bde940..1f2339f 100644
--- a/src/utils/genPoster.ts
+++ b/src/utils/genPoster.ts
@@ -7,6 +7,12 @@ const dateIcon = `${OSS_BASE}/front/ball/images/1b49476e-0eda-42ff-b08c-002ce510
 const mapIcon = `${OSS_BASE}/front/ball/images/06b994fa-9227-4708-8555-8a07af8d0c3b.jpg`;
 const logoText = `${OSS_BASE}/system/youchang_tip_text.png`;
 
+/** 给图片 URL 加随机参数，避免同一链接二次加载不触发 onload */
+function with_cache_bust(url: string): string {
+  const sep = url.includes('?') ? '&' : '?';
+  return `${url}${sep}_t=${Date.now()}_${Math.random().toString(36).slice(2)}`;
+}
+
 export function base64ToTempFilePath(base64Data: string): Promise<string> {
   return new Promise((resolve, reject) => {
     const fsm = Taro.getFileSystemManager();
@@ -332,7 +338,7 @@ export async function generatePosterImage(data: any): Promise<string> {
   roundRectGradient(ctx, 0, 0, width, height, 24, "#BFFFEF", "#F2FFFC");
 
   console.log('bgUrl', bgUrl)
-  const bgImg = await loadImage(canvas, bgUrl, 'bgUrl');
+  const bgImg = await loadImage(canvas, with_cache_bust(bgUrl), 'bgUrl');
   ctx.drawImage(bgImg, 0, 0, width, height);
   console.log('bgUrlend',)
 
@@ -341,7 +347,7 @@ export async function generatePosterImage(data: any): Promise<string> {
 
 
   // 顶部图片
-  const mainImg = await loadImage(canvas, data.mainCoursal, 'mainCoursal');
+  const mainImg = await loadImage(canvas, with_cache_bust(data.mainCoursal), 'mainCoursal');
   console.log('mainCoursal', data.mainCoursal)
   await drawRotateCoverImage(
     ctx,
@@ -375,7 +381,7 @@ export async function generatePosterImage(data: any): Promise<string> {
   left = 20;
 
   // 用户头像
-  const avatarImg = await loadImage(canvas, data.avatarUrl, 'avatar');
+  const avatarImg = await loadImage(canvas, with_cache_bust(data.avatarUrl), 'avatar');
   ctx.save();
   ctx.beginPath();
   ctx.arc(left + 30, top + 30, 30, 0, Math.PI * 2);
@@ -396,7 +402,7 @@ export async function generatePosterImage(data: any): Promise<string> {
   ctx.fillStyle = "#00B578";
   ctx.fillText("球局", left, top);
 
-  const ringImg = await loadImage(canvas, ringUrl, 'ring');
+  const ringImg = await loadImage(canvas, with_cache_bust(ringUrl), 'ring');
   ctx.drawImage(ringImg, left - 10, top - 30, 80, 36);
 
   left = 20;
@@ -410,7 +416,7 @@ export async function generatePosterImage(data: any): Promise<string> {
   top = r.top + 30;
   left = 20;
 
-  const dateImg = await loadImage(canvas, dateIcon, 'date');
+  const dateImg = await loadImage(canvas, with_cache_bust(dateIcon), 'date');
 
   console.log('dateIcon', dateIcon)
   await drawCoverImage(
@@ -440,7 +446,7 @@ export async function generatePosterImage(data: any): Promise<string> {
   top += 24;
 
 
-  const mapImg = await loadImage(canvas, mapIcon, 'map');
+  const mapImg = await loadImage(canvas, with_cache_bust(mapIcon), 'map');
   await drawCoverImage(ctx, canvas, mapIcon, mapImg, left, top, 40, 40, 12);
 
   left += 40 + 16;
@@ -454,7 +460,7 @@ export async function generatePosterImage(data: any): Promise<string> {
   top = r.top + 60;
 
   const logoWh = await getImageWh(logoText);
-  const logoTextImg = await loadImage(canvas, logoText, 'logo');
+  const logoTextImg = await loadImage(canvas, with_cache_bust(logoText), 'logo');
   ctx.drawImage(
     logoTextImg,
     left,
@@ -464,7 +470,7 @@ export async function generatePosterImage(data: any): Promise<string> {
     400 / (logoWh.width / logoWh.height)
   );
 
-  const qrImg = await loadImage(canvas, data.qrCodeUrl, 'qrcode');
+  const qrImg = await loadImage(canvas, with_cache_bust(data.qrCodeUrl), 'qrcode');
 
   // roundRectGradient(ctx, width - 12 - 150, height - 22 - 140, 140, 140, 20, "#fff", "#fff")
   ctx.drawImage(qrImg, width - 22 - 100, height - 22 - 100 - 2, 100, 100);