diff --git a/src/gateway/runtime.rs b/src/gateway/runtime.rs
index b43a5f8..110319e 100644
--- a/src/gateway/runtime.rs
+++ b/src/gateway/runtime.rs
@@ -106,6 +106,7 @@ pub(crate) fn build_session_manager_with_sender(
             explore_max_execution_secs: task_config.explore_max_execution_secs,
             explore_max_tool_calls: 20,
             ttl_hours: task_config.ttl_hours,
+            skills_index: skills.system_index_prompt(),
         };
 
         let subagent_runtime = Arc::new(DefaultSubAgentRuntime::new(
diff --git a/src/tools/task/prompt.rs b/src/tools/task/prompt.rs
index 8547218..3608e76 100644
--- a/src/tools/task/prompt.rs
+++ b/src/tools/task/prompt.rs
@@ -5,19 +5,27 @@ use crate::config::LLMProviderConfig;
 pub struct SubagentPromptBuilder;
 
 impl SubagentPromptBuilder {
-    /// 构建子代理系统提示词（包含系统环境信息）
+    /// 构建子代理系统提示词（包含系统环境信息和技能索引）
     pub fn build(
         subagent_type: SubagentType,
         description: &str,
         _prompt: &str,
         config: &LLMProviderConfig,
+        skills_index: Option<&str>,
     ) -> String {
         let base_prompt = match subagent_type {
             SubagentType::General => Self::build_general_prompt(description),
             SubagentType::Explore => Self::build_explore_prompt(description),
         };
         let env_info = crate::agent::generate_system_env_prompt(config);
-        format!("{}\n\n{}", base_prompt, env_info)
+
+        // 组合提示词：基础 + 环境 + 技能索引（可选）
+        match skills_index {
+            Some(index) if !index.is_empty() => {
+                format!("{}\n\n{}\n\n{}", base_prompt, env_info, index)
+            }
+            _ => format!("{}\n\n{}", base_prompt, env_info),
+        }
     }
 
     /// 构建恢复任务的提示词
diff --git a/src/tools/task/runtime.rs b/src/tools/task/runtime.rs
index 530efe1..7fd60a8 100644
--- a/src/tools/task/runtime.rs
+++ b/src/tools/task/runtime.rs
@@ -28,6 +28,8 @@ pub struct SubAgentRuntimeConfig {
     pub explore_max_tool_calls: usize,
     /// 任务 TTL（小时）
     pub ttl_hours: u64,
+    /// 技能索引（可选，预生成的技能列表字符串）
+    pub skills_index: Option<String>,
 }
 
 impl Default for SubAgentRuntimeConfig {
@@ -51,6 +53,7 @@ impl Default for SubAgentRuntimeConfig {
             explore_max_execution_secs: 600, // 10分钟
             explore_max_tool_calls: 20,
             ttl_hours: 24,
+            skills_index: None,
         }
     }
 }
@@ -282,6 +285,7 @@ impl SubAgentRuntime for DefaultSubAgentRuntime {
             &task.description,
             &task.prompt,
             &self.provider_config,
+            self.config.skills_index.as_deref(),
         );
 
         // 5. 创建子代理