diff --git a/configs/cat_state_machine.json b/configs/cat_state_machine.json
index 636a3c7..d797604 100644
--- a/configs/cat_state_machine.json
+++ b/configs/cat_state_machine.json
@@ -1169,6 +1169,7 @@
     "backend": "local",
     "whisper_lib_dir": "/home/showen/ai_spike/whisper.cpp/build/bin",
     "piper_lib_dir": "/home/showen/ai_spike/piper/piper",
-    "piper_config": "/home/showen/ai_spike/piper/zh_CN-huayan-medium.onnx.json"
+    "piper_config": "/home/showen/ai_spike/piper/zh_CN-huayan-medium.onnx.json",
+    "espeak_data_dir": "/home/showen/ai_spike/piper/piper/espeak-ng-data"
   }
 }
\ No newline at end of file
diff --git a/configs/dog_state_machine.json b/configs/dog_state_machine.json
index e266eea..7c150b1 100644
--- a/configs/dog_state_machine.json
+++ b/configs/dog_state_machine.json
@@ -1181,6 +1181,7 @@
     "backend": "local",
     "whisper_lib_dir": "/home/showen/ai_spike/whisper.cpp/build/bin",
     "piper_lib_dir": "/home/showen/ai_spike/piper/piper",
-    "piper_config": "/home/showen/ai_spike/piper/zh_CN-huayan-medium.onnx.json"
+    "piper_config": "/home/showen/ai_spike/piper/zh_CN-huayan-medium.onnx.json",
+    "espeak_data_dir": "/home/showen/ai_spike/piper/piper/espeak-ng-data"
   }
 }
\ No newline at end of file
diff --git a/src/core/config.rs b/src/core/config.rs
index ef46e37..7fb2a77 100644
--- a/src/core/config.rs
+++ b/src/core/config.rs
@@ -390,6 +390,9 @@ pub struct AiConfig {
     /// piper 模型 config json 路径 (.onnx.json)
     #[serde(default)]
     pub piper_config: Option<PathBuf>,
+    /// piper espeak-ng-data 目录路径
+    #[serde(default)]
+    pub espeak_data_dir: Option<PathBuf>,
     /// 临时文件目录
     #[serde(default = "default_tmp_dir")]
     pub tmp_dir: PathBuf,
diff --git a/src/main.rs b/src/main.rs
index cbb14b5..5244af5 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -52,6 +52,7 @@ fn main() -> Result<()> {
     let ai_whisper_lib_dir = config.ai.whisper_lib_dir.clone();
     let ai_piper_lib_dir = config.ai.piper_lib_dir.clone();
     let ai_piper_config = config.ai.piper_config.clone();
+    let ai_espeak_data_dir = config.ai.espeak_data_dir.clone();
     let ai_tmp_dir = config.ai.tmp_dir.clone();
     let ai_context_window = config.ai.context_window;
 
@@ -85,6 +86,7 @@ fn main() -> Result<()> {
         ai_whisper_lib_dir,
         ai_piper_lib_dir,
         ai_piper_config,
+        ai_espeak_data_dir,
         ai_tmp_dir,
         ai_context_window,
     );
diff --git a/src/plugins/ai/backend.rs b/src/plugins/ai/backend.rs
index c5ae1cb..e7feffd 100644
--- a/src/plugins/ai/backend.rs
+++ b/src/plugins/ai/backend.rs
@@ -52,6 +52,8 @@ pub struct LocalCliBackend {
     piper_lib_dir: Option<PathBuf>,
     /// piper 模型 config json 路径（.onnx.json）
     piper_config: Option<PathBuf>,
+    /// piper espeak-ng-data 目录路径
+    espeak_data_dir: Option<PathBuf>,
 }
 
 impl LocalCliBackend {
@@ -61,6 +63,7 @@ impl LocalCliBackend {
             whisper_lib_dir: None,
             piper_lib_dir: None,
             piper_config: None,
+            espeak_data_dir: None,
         }
     }
 
@@ -70,10 +73,11 @@ impl LocalCliBackend {
         self
     }
 
-    /// 设置 piper 依赖库路径和 config（部署时由 deploy_ai.sh 标定）
-    pub fn with_piper_deps(mut self, lib_dir: PathBuf, config: PathBuf) -> Self {
+    /// 设置 piper 依赖（库路径、config、espeak-ng-data 目录）
+    pub fn with_piper_deps(mut self, lib_dir: PathBuf, config: PathBuf, espeak_data: PathBuf) -> Self {
         self.piper_lib_dir = Some(lib_dir);
         self.piper_config = Some(config);
+        self.espeak_data_dir = Some(espeak_data);
         self
     }
 
@@ -198,10 +202,14 @@ impl AiBackend for LocalCliBackend {
     fn tts(&self, text: &str, model_path: &Path, output_path: &Path) -> Result<()> {
         // echo <text> | piper -m <model> [-c <config>] -f <output> --output_format wav
         // piper 依赖 libespeak-ng.so / libpiper_phonemize.so，需设 LD_LIBRARY_PATH
+        // piper 需要 ESPEAK_DATA_PATH 指向 espeak-ng-data 目录
         let mut cmd = Command::new(self.piper());
         if let Some(lib_dir) = &self.piper_lib_dir {
             self.with_lib_path(&mut cmd, lib_dir);
         }
+        if let Some(espeak_data) = &self.espeak_data_dir {
+            cmd.env("ESPEAK_DATA_PATH", espeak_data);
+        }
         cmd.arg("-m")
             .arg(model_path)
             .arg("-f")
diff --git a/src/plugins/ai/mod.rs b/src/plugins/ai/mod.rs
index a2e5095..c2fff39 100644
--- a/src/plugins/ai/mod.rs
+++ b/src/plugins/ai/mod.rs
@@ -50,6 +50,7 @@ impl AiPlugin {
         whisper_lib_dir: Option<PathBuf>,
         piper_lib_dir: Option<PathBuf>,
         piper_config: Option<PathBuf>,
+        espeak_data_dir: Option<PathBuf>,
         tmp_dir: PathBuf,
         context_window: usize,
     ) -> Self {
@@ -57,8 +58,9 @@ impl AiPlugin {
         if let Some(lib_dir) = whisper_lib_dir {
             backend_builder = backend_builder.with_whisper_lib_dir(lib_dir);
         }
-        if let (Some(lib_dir), Some(config)) = (piper_lib_dir, piper_config) {
-            backend_builder = backend_builder.with_piper_deps(lib_dir, config);
+        // piper 三个依赖必须同时设置
+        if let (Some(lib_dir), Some(config), Some(espeak_data)) = (piper_lib_dir, piper_config, espeak_data_dir) {
+            backend_builder = backend_builder.with_piper_deps(lib_dir, config, espeak_data);
         }
         let backend = Box::new(backend_builder);
         let models = model_manager::ModelManager::new(model_store);