diff --git a/src-tauri/src/bili_client.rs b/src-tauri/src/bili_client.rs
index f6cbbca..be846dd 100644
--- a/src-tauri/src/bili_client.rs
+++ b/src-tauri/src/bili_client.rs
@@ -309,16 +309,17 @@ impl BiliClient {
     }
 
     pub async fn get_image_index(&self, episode_id: i64) -> anyhow::Result<ImageIndexRespData> {
-        let access_token = self.access_token();
+        let cookie = self.cookie();
         let params = json!({
-            "device": "android",
-            "access_key": access_token,
+            "platform": "web",
+            "device": "pc",
         });
-        let payload = json!({"epId": episode_id});
-        // 发送获取ImageIndexRespData的请求
+        let payload = json!({"ep_id": episode_id});
+        // 发送获取ImageIndex的请求
         let http_resp = Self::client()
             .post("https://manga.bilibili.com/twirp/comic.v1.Comic/GetImageIndex")
             .query(&params)
+            .header("cookie", cookie)
             .json(&payload)
             .send()
             .await?;
@@ -355,17 +356,37 @@ impl BiliClient {
         Ok(image_index_data)
     }
 
-    pub async fn get_image_token(&self, urls: &Vec<String>) -> anyhow::Result<ImageTokenRespData> {
-        let cookie = self.app.state::<RwLock<Config>>().read().get_cookie();
+    pub async fn get_image_token(
+        &self,
+        urls: &Vec<String>,
+        from_web_api: bool,
+    ) -> anyhow::Result<ImageTokenRespData> {
+        let url = "https://manga.bilibili.com/twirp/comic.v1.Comic/ImageToken";
         let urls_str = serde_json::to_string(urls)?;
         let payload = json!({"urls": urls_str});
+        // 构造获取ImageToken的请求
+        let http_req = if from_web_api {
+            let cookie = self.cookie();
+            let params = json!({
+                "platform": "web",
+                "device": "pc",
+            });
+            Self::client()
+                .post(url)
+                .query(&params)
+                .header("cookie", cookie)
+                .json(&payload)
+        } else {
+            let access_token = self.access_token();
+            let params = json!({
+                "mobi_app": "android_comic",
+                "version": "6.5.0",
+                "access_key": access_token,
+            });
+            Self::client().post(url).query(&params).json(&payload)
+        };
         // 发送获取ImageToken的请求
-        let http_resp = Self::client()
-            .post("https://manga.bilibili.com/twirp/comic.v1.Comic/ImageToken")
-            .header("cookie", cookie)
-            .json(&payload)
-            .send()
-            .await?;
+        let http_resp = http_req.send().await?;
         // 检查http响应状态码
         let status = http_resp.status();
         let body = http_resp.text().await?;
@@ -402,6 +423,10 @@ impl BiliClient {
             .access_token
             .clone()
     }
+
+    fn cookie(&self) -> String {
+        self.app.state::<RwLock<Config>>().read().get_cookie()
+    }
 }
 
 fn app_sign(mut params: BTreeMap<String, String>) -> BTreeMap<String, String> {
diff --git a/src-tauri/src/download_manager.rs b/src-tauri/src/download_manager.rs
index bf9e731..e372f2c 100644
--- a/src-tauri/src/download_manager.rs
+++ b/src-tauri/src/download_manager.rs
@@ -151,7 +151,7 @@ impl DownloadManager {
             .iter()
             .map(|img| img.path.clone())
             .collect();
-        let image_token_data_data = bili_client.get_image_token(&urls).await?;
+        let image_token_data_data = bili_client.get_image_token(&urls, true).await?;
 
         let temp_download_dir = get_ep_temp_download_dir(&self.app, &ep_info);
         std::fs::create_dir_all(&temp_download_dir)
@@ -313,7 +313,9 @@ impl DownloadManager {
 
         let http_client = create_http_client();
         let bili_client = self.bili_client();
-        let image_token_data_data = bili_client.get_image_token(&album_plus_item.pic).await?;
+        let image_token_data_data = bili_client
+            .get_image_token(&album_plus_item.pic, false)
+            .await?;
 
         let temp_download_dir = get_album_plus_temp_download_dir(&self.app, &album_plus_item);
         std::fs::create_dir_all(&temp_download_dir)
@@ -427,20 +429,17 @@ impl DownloadManager {
                 return;
             }
         };
-        // 取出url中query部分的cpx参数
-        let Some((_, cpx)) = parsed_url.query_pairs().find(|(key, _)| key == "cpx") else {
-            let err = anyhow!("图片链接 {url} 中没有cpx参数");
-            emit_error_event(&self.app, id, url.to_string(), err.to_string());
-            return;
-        };
-        // 解密图片数据
-        let image_data = match decrypt_img_data(image_data, &cpx) {
-            Ok(data) => data,
-            Err(err) => {
-                let err = err.context(format!("解密图片 {url} 失败"));
-                emit_error_event(&self.app, id, url, err.to_string_chain());
-                return;
-            }
+        // 如果 parsed_url 里能找到cpx参数，则解密图片数据，否则用原始数据
+        let image_data = match parsed_url.query_pairs().find(|(key, _)| key == "cpx") {
+            Some((_, cpx)) => match decrypt_img_data(image_data, &cpx) {
+                Ok(data) => data,
+                Err(err) => {
+                    let err = err.context(format!("解密图片 {url} 失败"));
+                    emit_error_event(&self.app, id, url, err.to_string_chain());
+                    return;
+                }
+            },
+            None => image_data,
         };
         // 保存图片
         if let Err(err) = std::fs::write(&save_path, &image_data).map_err(anyhow::Error::from) {