diff --git a/apps/desktop/src-tauri/Cargo.toml b/apps/desktop/src-tauri/Cargo.toml
index f830548..50e43aa 100644
--- a/apps/desktop/src-tauri/Cargo.toml
+++ b/apps/desktop/src-tauri/Cargo.toml
@@ -49,6 +49,10 @@ num_cpus = "1.16"
 tokio-tungstenite = "0.20"
 futures-util = "0.3"
 rand = "0.8"
+hmac = "0.12.1"
+sha2 = "0.10.9"
+hex = "0.4.3"
+url = "2.5.4"
 
 [target.'cfg(windows)'.dependencies]
 winapi = { version = "0.3", features = ["sysinfoapi"] }
diff --git a/apps/desktop/src-tauri/src/business/services/volcano_video_service.rs b/apps/desktop/src-tauri/src/business/services/volcano_video_service.rs
index 2dcf2a3..71c203d 100644
--- a/apps/desktop/src-tauri/src/business/services/volcano_video_service.rs
+++ b/apps/desktop/src-tauri/src/business/services/volcano_video_service.rs
@@ -4,6 +4,11 @@ use serde::{Deserialize, Serialize};
 use std::sync::Arc;
 use tracing::{error, info, warn};
 use uuid::Uuid;
+use chrono::{DateTime, Utc};
+use hmac::{Hmac, Mac};
+use sha2::{Digest, Sha256};
+use hex;
+use url::Url;
 
 use crate::data::models::video_generation_record::{
     VideoGenerationRecord, CreateVideoGenerationRequest, VideoGenerationQuery
@@ -227,12 +232,10 @@ impl VolcanoVideoService {
         let api_url = "https://visual.volcengineapi.com?Action=CVSubmitTask&Version=2022-08-31";
 
         // 构建认证头
-        let timestamp = std::time::SystemTime::now()
-            .duration_since(std::time::UNIX_EPOCH)
-            .unwrap()
-            .as_secs()
-            .to_string();
-        let auth_header = self.build_auth_header("POST", api_url, &timestamp, &request_body)?;
+        let now = Utc::now();
+        let timestamp = now.format("%Y%m%dT%H%M%SZ").to_string();
+        let date = now.format("%Y%m%d").to_string();
+        let auth_header = self.build_auth_header("POST", api_url, &timestamp, &date, &request_body)?;
 
         let response = self.http_client
             .post(api_url)
@@ -340,12 +343,10 @@ impl VolcanoVideoService {
         let api_url = "https://visual.volcengineapi.com?Action=CVGetResult&Version=2022-08-31";
 
         // 构建认证头
-        let timestamp = std::time::SystemTime::now()
-            .duration_since(std::time::UNIX_EPOCH)
-            .unwrap()
-            .as_secs()
-            .to_string();
-        let auth_header = self.build_auth_header("POST", api_url, &timestamp, &request_body)?;
+        let now = Utc::now();
+        let timestamp = now.format("%Y%m%dT%H%M%SZ").to_string();
+        let date = now.format("%Y%m%d").to_string();
+        let auth_header = self.build_auth_header("POST", api_url, &timestamp, &date, &request_body)?;
 
         let response = self.http_client
             .post(api_url)
@@ -372,11 +373,28 @@ impl VolcanoVideoService {
     }
 
     /// 构建火山云API认证头
-    fn build_auth_header<T: Serialize>(&self, _method: &str, _url: &str, _timestamp: &str, _body: &T) -> Result<String> {
-        // 简化的认证实现，实际项目中需要按照火山云文档实现完整的签名算法
-        // 这里先返回基本的认证头格式
-        let auth_string = format!("HMAC-SHA256 Credential={}, SignedHeaders=content-type;host;x-date, Signature=placeholder",
-                                 self.vol_access_key);
+    fn build_auth_header<T: Serialize>(&self, method: &str, url: &str, timestamp: &str, date: &str, body: &T) -> Result<String> {
+        // 1. 创建规范请求 (CanonicalRequest)
+        let canonical_request = self.create_canonical_request(method, url, timestamp, body)?;
+
+        // 2. 创建待签名字符串 (StringToSign)
+        let credential_scope = format!("{}/cn-north-1/cv/request", date);
+        let string_to_sign = self.create_string_to_sign(timestamp, &credential_scope, &canonical_request)?;
+
+        // 3. 派生签名密钥 (kSigning)
+        let signing_key = self.derive_signing_key(&self.vol_secret_key, date, "cn-north-1", "cv")?;
+
+        // 4. 计算签名 (Signature)
+        let signature = self.calculate_signature(&signing_key, &string_to_sign)?;
+
+        // 5. 构建Authorization头
+        let auth_string = format!(
+            "HMAC-SHA256 Credential={}/{}, SignedHeaders=host;x-date, Signature={}",
+            self.vol_access_key,
+            credential_scope,
+            signature
+        );
+
         Ok(auth_string)
     }
 
@@ -402,6 +420,120 @@ impl VolcanoVideoService {
         }
         Ok(())
     }
+
+    /// 创建规范请求
+    fn create_canonical_request<T: Serialize>(&self, method: &str, url: &str, timestamp: &str, body: &T) -> Result<String> {
+        // 解析URL获取host和path
+        let parsed_url = Url::parse(url)?;
+        let host = parsed_url.host_str().ok_or_else(|| anyhow!("无效的URL"))?;
+        let path = parsed_url.path();
+        let query = parsed_url.query().unwrap_or("");
+
+        // 规范化查询字符串
+        let canonical_query_string = self.canonicalize_query_string(query);
+
+        // 规范化请求头
+        let canonical_headers = format!("host:{}\nx-date:{}\n", host, timestamp);
+
+        // 签名的请求头
+        let signed_headers = "host;x-date";
+
+        // 计算请求体的哈希值
+        let body_json = serde_json::to_string(body)?;
+        let body_hash = hex::encode(Sha256::digest(body_json.as_bytes()));
+
+        // 构建规范请求
+        let canonical_request = format!(
+            "{}\n{}\n{}\n{}\n{}\n{}",
+            method,
+            path,
+            canonical_query_string,
+            canonical_headers,
+            signed_headers,
+            body_hash
+        );
+
+        Ok(canonical_request)
+    }
+
+    /// 规范化查询字符串
+    fn canonicalize_query_string(&self, query: &str) -> String {
+        if query.is_empty() {
+            return String::new();
+        }
+
+        let mut params: Vec<(String, String)> = query
+            .split('&')
+            .filter_map(|param| {
+                let mut parts = param.splitn(2, '=');
+                let key = parts.next()?.to_string();
+                let value = parts.next().unwrap_or("").to_string();
+                Some((key, value))
+            })
+            .collect();
+
+        // 按参数名称的ASCII升序排序
+        params.sort_by(|a, b| a.0.cmp(&b.0));
+
+        // 构建规范化查询字符串
+        params
+            .into_iter()
+            .map(|(key, value)| format!("{}={}", key, value))
+            .collect::<Vec<_>>()
+            .join("&")
+    }
+
+    /// 创建待签名字符串
+    fn create_string_to_sign(&self, timestamp: &str, credential_scope: &str, canonical_request: &str) -> Result<String> {
+        let canonical_request_hash = hex::encode(Sha256::digest(canonical_request.as_bytes()));
+
+        let string_to_sign = format!(
+            "HMAC-SHA256\n{}\n{}\n{}",
+            timestamp,
+            credential_scope,
+            canonical_request_hash
+        );
+
+        Ok(string_to_sign)
+    }
+
+    /// 派生签名密钥
+    fn derive_signing_key(&self, secret_key: &str, date: &str, region: &str, service: &str) -> Result<Vec<u8>> {
+        type HmacSha256 = Hmac<Sha256>;
+
+        // kDate = HMAC(kSecret, Date)
+        let mut mac = HmacSha256::new_from_slice(secret_key.as_bytes())?;
+        mac.update(date.as_bytes());
+        let k_date = mac.finalize().into_bytes();
+
+        // kRegion = HMAC(kDate, Region)
+        let mut mac = HmacSha256::new_from_slice(&k_date)?;
+        mac.update(region.as_bytes());
+        let k_region = mac.finalize().into_bytes();
+
+        // kService = HMAC(kRegion, Service)
+        let mut mac = HmacSha256::new_from_slice(&k_region)?;
+        mac.update(service.as_bytes());
+        let k_service = mac.finalize().into_bytes();
+
+        // kSigning = HMAC(kService, "request")
+        let mut mac = HmacSha256::new_from_slice(&k_service)?;
+        mac.update(b"request");
+        let k_signing = mac.finalize().into_bytes();
+
+        Ok(k_signing.to_vec())
+    }
+
+    /// 计算签名
+    fn calculate_signature(&self, signing_key: &[u8], string_to_sign: &str) -> Result<String> {
+        type HmacSha256 = Hmac<Sha256>;
+
+        let mut mac = HmacSha256::new_from_slice(signing_key)?;
+        mac.update(string_to_sign.as_bytes());
+        let signature = mac.finalize().into_bytes();
+
+        Ok(hex::encode(signature))
+    }
 }
 
 // 实现Clone trait以支持异步任务