diff --git a/lightrag/kg/postgres_impl.py b/lightrag/kg/postgres_impl.py
index 703730ab..93f0cad7 100644
--- a/lightrag/kg/postgres_impl.py
+++ b/lightrag/kg/postgres_impl.py
@@ -85,24 +85,11 @@ class PostgreSQLDB:
         # Statement LRU cache size (keep as-is, allow None for optional configuration)
         self.statement_cache_size = config.get("statement_cache_size")
 
-        # Connection retry configuration
-        self.connection_retry_attempts = max(
-            1, min(10, int(os.environ.get("POSTGRES_CONNECTION_RETRIES", 3)))
-        )
-        self.connection_retry_backoff = max(
-            0.1,
-            min(5.0, float(os.environ.get("POSTGRES_CONNECTION_RETRY_BACKOFF", 0.5))),
-        )
-        self.connection_retry_backoff_max = max(
-            self.connection_retry_backoff,
-            min(
-                60.0,
-                float(os.environ.get("POSTGRES_CONNECTION_RETRY_BACKOFF_MAX", 5.0)),
-            ),
-        )
-        self.pool_close_timeout = max(
-            1.0, min(30.0, float(os.environ.get("POSTGRES_POOL_CLOSE_TIMEOUT", 5.0)))
-        )
+        if self.user is None or self.password is None or self.database is None:
+            raise ValueError("Missing database user, password, or database")
+
+        # Guard concurrent pool resets
+        self._pool_reconnect_lock = asyncio.Lock()
 
         self._transient_exceptions = (
             asyncio.TimeoutError,
@@ -117,12 +104,14 @@ class PostgreSQLDB:
             asyncpg.exceptions.ConnectionFailureError,
         )
 
-        # Guard concurrent pool resets
-        self._pool_reconnect_lock = asyncio.Lock()
-
-        if self.user is None or self.password is None or self.database is None:
-            raise ValueError("Missing database user, password, or database")
-
+        # Connection retry configuration
+        self.connection_retry_attempts = config["connection_retry_attempts"]
+        self.connection_retry_backoff = config["connection_retry_backoff"]
+        self.connection_retry_backoff_max = max(
+            self.connection_retry_backoff,
+            config["connection_retry_backoff_max"],
+        )
+        self.pool_close_timeout = config["pool_close_timeout"]
         logger.info(
             "PostgreSQL, Retry config: attempts=%s, backoff=%.1fs, backoff_max=%.1fs, pool_close_timeout=%.1fs",
             self.connection_retry_attempts,
@@ -215,9 +204,7 @@ class PostgreSQLDB:
 
         # Only add statement_cache_size if it's configured
         if self.statement_cache_size is not None:
-            connection_params["statement_cache_size"] = int(
-                self.statement_cache_size
-            )
+            connection_params["statement_cache_size"] = int(self.statement_cache_size)
             logger.info(
                 f"PostgreSQL, statement LRU cache size set as: {self.statement_cache_size}"
             )
@@ -1566,6 +1553,49 @@ class ClientManager:
                 "POSTGRES_STATEMENT_CACHE_SIZE",
                 config.get("postgres", "statement_cache_size", fallback=None),
             ),
+            # Connection retry configuration
+            "connection_retry_attempts": min(
+                10,
+                int(
+                    os.environ.get(
+                        "POSTGRES_CONNECTION_RETRIES",
+                        config.get("postgres", "connection_retries", fallback=3),
+                    )
+                ),
+            ),
+            "connection_retry_backoff": min(
+                5.0,
+                float(
+                    os.environ.get(
+                        "POSTGRES_CONNECTION_RETRY_BACKOFF",
+                        config.get(
+                            "postgres", "connection_retry_backoff", fallback=0.5
+                        ),
+                    )
+                ),
+            ),
+            "connection_retry_backoff_max": min(
+                60.0,
+                float(
+                    os.environ.get(
+                        "POSTGRES_CONNECTION_RETRY_BACKOFF_MAX",
+                        config.get(
+                            "postgres",
+                            "connection_retry_backoff_max",
+                            fallback=5.0,
+                        ),
+                    )
+                ),
+            ),
+            "pool_close_timeout": min(
+                30.0,
+                float(
+                    os.environ.get(
+                        "POSTGRES_POOL_CLOSE_TIMEOUT",
+                        config.get("postgres", "pool_close_timeout", fallback=5.0),
+                    )
+                ),
+            ),
         }
 
     @classmethod
diff --git a/tests/test_postgres_retry_integration.py b/tests/test_postgres_retry_integration.py
index 137ba686..515f3072 100644
--- a/tests/test_postgres_retry_integration.py
+++ b/tests/test_postgres_retry_integration.py
@@ -38,6 +38,19 @@ class TestPostgresRetryIntegration:
             "database": os.getenv("POSTGRES_DATABASE", "postgres"),
             "workspace": os.getenv("POSTGRES_WORKSPACE", "test_retry"),
             "max_connections": int(os.getenv("POSTGRES_MAX_CONNECTIONS", "10")),
+            # Connection retry configuration
+            "connection_retry_attempts": min(
+                10, int(os.getenv("POSTGRES_CONNECTION_RETRIES", "3"))
+            ),
+            "connection_retry_backoff": min(
+                5.0, float(os.getenv("POSTGRES_CONNECTION_RETRY_BACKOFF", "0.5"))
+            ),
+            "connection_retry_backoff_max": min(
+                60.0, float(os.getenv("POSTGRES_CONNECTION_RETRY_BACKOFF_MAX", "5.0"))
+            ),
+            "pool_close_timeout": min(
+                30.0, float(os.getenv("POSTGRES_POOL_CLOSE_TIMEOUT", "5.0"))
+            ),
         }
 
     @pytest.fixture