diff --git a/config/config2.example.yaml b/config/config2.example.yaml
index 7f4758acb..7cfd70347 100644
--- a/config/config2.example.yaml
+++ b/config/config2.example.yaml
@@ -17,10 +17,10 @@ llm:
 # For backward compatibility, if the embedding is not set and the llm's api_type is either openai or azure, the llm's config will be used. 
 embedding:
     api_type: "" # openai / azure / gemini / ollama etc. Check EmbeddingType for more options. 
-    base_url: "YOU_BASE_URL"
-    api_key: "YOU_API_KEY"
-    model: "YOU_MODEL"
-    api_version: "YOU_API_VERSION"
+    base_url: ""
+    api_key: ""
+    model: ""
+    api_version: ""
     embed_batch_size: 100
 
 repair_llm_output: true  # when the output is not a valid json, try to repair it
diff --git a/metagpt/configs/embedding_config.py b/metagpt/configs/embedding_config.py
index 545c2a9cc..20de47999 100644
--- a/metagpt/configs/embedding_config.py
+++ b/metagpt/configs/embedding_config.py
@@ -14,7 +14,25 @@ class EmbeddingType(Enum):
 
 
 class EmbeddingConfig(YamlModel):
-    """Config for Embedding."""
+    """Config for Embedding.
+
+    Examples:
+    ---------
+    api_type: "openai"
+    api_key: "YOU_API_KEY"
+
+    api_type: "azure"
+    api_key: "YOU_API_KEY"
+    base_url: "YOU_BASE_URL"
+    api_version: "YOU_API_VERSION"
+
+    api_type: "gemini"
+    api_key: "YOU_API_KEY"
+
+    api_type: "ollama"
+    base_url: "YOU_BASE_URL"
+    model: "YOU_MODEL"
+    """
 
     api_type: Optional[EmbeddingType] = None
     api_key: Optional[str] = None