diff --git a/lambda/start-rds/start-rds.py b/lambda/start-rds/start-rds.py
new file mode 100644
index 00000000..a077cb88
--- /dev/null
+++ b/lambda/start-rds/start-rds.py
@@ -0,0 +1,29 @@
+import os
+
+import boto3
+
+#環境変数
+client = boto3.client('rds')
+
+AUTO_START_TAG_TAGKEY = 'AUTO_START'
+AUTO_START_ENABLE = 'true'
+
+def lambda_handler(event, context):
+    #クラスターを停止
+    clusters = client.describe_db_clusters()
+    for cluster in clusters['DBClusters']:
+        if cluster['Status'] == "stopped":
+            tags = client.list_tags_for_resource(ResourceName=cluster['DBClusterArn'])
+            for tag in tags['TagList']:
+                if tag['Key'] == AUTO_START_TAG_TAGKEY and tag['Value'] == AUTO_START_ENABLE:
+                    client.start_db_cluster(DBClusterIdentifier=cluster['DBClusterIdentifier'])
+
+    #インスタンスを停止
+    instances = client.describe_db_instances()
+    for instance in instances['DBInstances']:
+        if instance['DBInstanceStatus'] == "stopped":
+            tags = client.list_tags_for_resource(ResourceName=instance['DBInstanceArn'])
+            for tag in tags['TagList']:
+                if tag['Key'] == AUTO_START_TAG_TAGKEY and tag['Value'] == AUTO_START_ENABLE:
+                    client.start_db_instance(DBInstanceIdentifier=instance['DBInstanceIdentifier'])
+