diff --git a/api/__init__.py b/api/__init__.py
index 3f756eb..b36ed17 100644
--- a/api/__init__.py
+++ b/api/__init__.py
@@ -29,7 +29,7 @@ from .s0_base import is_node, is_junction, is_reservoir, is_tank
 from .s0_base import is_link, is_pipe, is_pump, is_valve
 from .s0_base import is_curve
 from .s0_base import is_pattern
-from .s0_base import get_nodes, get_junctions, get_reservoirs, get_tanks, get_links, get_pipes, get_pumps, get_valves, get_curves, get_patterns
+from .s0_base import get_nodes, get_nodes_id_and_type, get_junctions, get_reservoirs, get_tanks, get_links, get_links_id_and_type, get_pipes, get_pumps, get_valves, get_curves, get_patterns
 from .s0_base import get_node_links, get_link_nodes
 
 from .s1_title import get_title_schema, get_title, set_title
diff --git a/api/s0_base.py b/api/s0_base.py
index c17f9f8..52da948 100644
--- a/api/s0_base.py
+++ b/api/s0_base.py
@@ -98,6 +98,15 @@ def _get_nodes_by_type(name: str, type: str) -> list[str]:
             ids.append(record['id'])
     return ids 
 
+# DingZQ
+def get_nodes_id_and_type(name: str) -> dict[str, str]:
+    nodes_id_and_type: dict[str, str] = {}
+    with conn[name].cursor(row_factory=dict_row) as cur:
+        cur.execute(f"select id, type from {_NODE} order by id")
+        for record in cur:
+            nodes_id_and_type[record['id']] = record['type']
+    return nodes_id_and_type
+
 # DingZQ
 def get_junctions(name: str) -> list[str]:
     return _get_nodes_by_type(name, JUNCTION)
@@ -123,6 +132,15 @@ def _get_links_by_type(name: str, type: str) -> list[str]:
             ids.append(record['id'])
     return ids
 
+# DingZQ
+def get_links_id_and_type(name: str) -> dict[str, str]:
+    links_id_and_type: dict[str, str] = {}
+    with conn[name].cursor(row_factory=dict_row) as cur:
+        cur.execute(f"select id, type from {_LINK} order by id")
+        for record in cur:
+            links_id_and_type[record['id']] = record['type']
+    return links_id_and_type
+
 # DingZQ
 def get_pipes(name: str) -> list[str]:
     return _get_links_by_type(name, PIPE)
diff --git a/tjnetwork.py b/tjnetwork.py
index b3467af..de06930 100644
--- a/tjnetwork.py
+++ b/tjnetwork.py
@@ -832,23 +832,12 @@ def get_node_coord(name: str, node_id: str) -> dict[str, float]:
 
 # DingZQ, 2024-12-08, get all node coord
 # id, x, y, type
-def get_network_coords(name: str) -> dict[str, dict[str, float]]:
-    node_ids = api.get_nodes(name)
-    junctions = api.get_junctions(name)
-    reservoirs = api.get_reservoirs(name)
-    tanks = api.get_tanks(name)
+def get_network_node_coords(name: str) -> dict[str, dict[str, float]]:
+    nodes_id_and_type = api.get_nodes_id_and_type(name)
     result = {}
-    for node_id in node_ids:
-        #result[node_id] = api.get_node_coord(name, node_id)
+    for node_id, node_type in nodes_id_and_type.items():
         coord = api.get_node_coord(name, node_id)
-        if node_id in junctions:
-            coord['type'] = 'junction'
-        elif node_id in reservoirs:
-            coord['type'] = 'reservoir'
-        elif node_id in tanks:
-            coord['type'] = 'tank'
-        else:
-            coord['type'] = 'node'
+        coord['type'] = node_type
         result[node_id] = coord
     return result