diff --git a/src/components/providers/forms/hooks/useModelState.ts b/src/components/providers/forms/hooks/useModelState.ts
index 5da7692f..518fe2c5 100644
--- a/src/components/providers/forms/hooks/useModelState.ts
+++ b/src/components/providers/forms/hooks/useModelState.ts
@@ -5,6 +5,42 @@ interface UseModelStateProps {
   onConfigChange: (config: string) => void;
 }
 
+/**
+ * Parse model values from settings config JSON
+ */
+function parseModelsFromConfig(settingsConfig: string) {
+  try {
+    const cfg = settingsConfig ? JSON.parse(settingsConfig) : {};
+    const env = cfg?.env || {};
+    const model =
+      typeof env.ANTHROPIC_MODEL === "string" ? env.ANTHROPIC_MODEL : "";
+    const reasoning =
+      typeof env.ANTHROPIC_REASONING_MODEL === "string"
+        ? env.ANTHROPIC_REASONING_MODEL
+        : "";
+    const small =
+      typeof env.ANTHROPIC_SMALL_FAST_MODEL === "string"
+        ? env.ANTHROPIC_SMALL_FAST_MODEL
+        : "";
+    const haiku =
+      typeof env.ANTHROPIC_DEFAULT_HAIKU_MODEL === "string"
+        ? env.ANTHROPIC_DEFAULT_HAIKU_MODEL
+        : small || model;
+    const sonnet =
+      typeof env.ANTHROPIC_DEFAULT_SONNET_MODEL === "string"
+        ? env.ANTHROPIC_DEFAULT_SONNET_MODEL
+        : model || small;
+    const opus =
+      typeof env.ANTHROPIC_DEFAULT_OPUS_MODEL === "string"
+        ? env.ANTHROPIC_DEFAULT_OPUS_MODEL
+        : model || small;
+
+    return { model, reasoning, haiku, sonnet, opus };
+  } catch {
+    return { model: "", reasoning: "", haiku: "", sonnet: "", opus: "" };
+  }
+}
+
 /**
  * 管理模型选择状态
  * 支持 ANTHROPIC_MODEL, ANTHROPIC_REASONING_MODEL 和各类型默认模型
@@ -13,11 +49,22 @@ export function useModelState({
   settingsConfig,
   onConfigChange,
 }: UseModelStateProps) {
-  const [claudeModel, setClaudeModel] = useState("");
-  const [reasoningModel, setReasoningModel] = useState("");
-  const [defaultHaikuModel, setDefaultHaikuModel] = useState("");
-  const [defaultSonnetModel, setDefaultSonnetModel] = useState("");
-  const [defaultOpusModel, setDefaultOpusModel] = useState("");
+  // Initialize state by parsing config directly (fixes edit mode backfill)
+  const [claudeModel, setClaudeModel] = useState(
+    () => parseModelsFromConfig(settingsConfig).model
+  );
+  const [reasoningModel, setReasoningModel] = useState(
+    () => parseModelsFromConfig(settingsConfig).reasoning
+  );
+  const [defaultHaikuModel, setDefaultHaikuModel] = useState(
+    () => parseModelsFromConfig(settingsConfig).haiku
+  );
+  const [defaultSonnetModel, setDefaultSonnetModel] = useState(
+    () => parseModelsFromConfig(settingsConfig).sonnet
+  );
+  const [defaultOpusModel, setDefaultOpusModel] = useState(
+    () => parseModelsFromConfig(settingsConfig).opus
+  );
 
   const isUserEditingRef = useRef(false);
   const lastConfigRef = useRef(settingsConfig);