diff --git a/csst_dfs_api_cluster/facility/__init__.py b/csst_dfs_api_cluster/facility/__init__.py
index a6d1a9e44d7cf4d85efcc311c644786e6d9e048e..01466f6af5c61e5aa7581b0d672c40bacbc6f43d 100644
--- a/csst_dfs_api_cluster/facility/__init__.py
+++ b/csst_dfs_api_cluster/facility/__init__.py
@@ -5,4 +5,5 @@ from .observation import ObservationApi
 from .level1 import Level1DataApi
 from .level0 import Level0DataApi
 from .level0prc import Level0PrcApi
-from .level1prc import Level1PrcApi
\ No newline at end of file
+from .level1prc import Level1PrcApi
+from .otherdata import OtherDataApi
\ No newline at end of file
diff --git a/csst_dfs_api_cluster/facility/otherdata.py b/csst_dfs_api_cluster/facility/otherdata.py
new file mode 100644
index 0000000000000000000000000000000000000000..d9bf2b2591e394715a3bcda13cac82df9e61c8ee
--- /dev/null
+++ b/csst_dfs_api_cluster/facility/otherdata.py
@@ -0,0 +1,126 @@
+import os
+import grpc
+import datetime
+
+from csst_dfs_commons.models import Result
+from csst_dfs_commons.models.common import from_proto_model_list
+from csst_dfs_commons.models.facility import OtherDataRecord
+from csst_dfs_commons.models.constants import UPLOAD_CHUNK_SIZE
+from csst_dfs_proto.facility.otherdata import otherdata_pb2, otherdata_pb2_grpc
+
+from ..common.service import ServiceProxy
+from ..common.utils import *
+
+class OtherDataApi(object):
+    """
+    OtherData Data Operation Class
+    """    
+    def __init__(self):
+        self.stub = otherdata_pb2_grpc.OtherDataSrvStub(ServiceProxy().channel())
+
+    def find(self, **kwargs):
+        ''' retrieve otherdata records from database
+
+        parameter kwargs:
+            obs_id: [str]
+            detector_no: [str]
+            module_id: [str]
+            file_type: [str]
+            filename: [str]
+            create_time : (start, end)
+            pipeline_id : [str]
+            limit: limits returns the number of records,default 0:no-limit
+
+        return: csst_dfs_common.models.Result
+        '''
+        try:
+            resp, _ =  self.stub.Find.with_call(otherdata_pb2.FindOtherDataReq(
+                obs_id = get_parameter(kwargs, "obs_id"),
+                detector_no = get_parameter(kwargs, "detector_no", ""),
+                module_id = get_parameter(kwargs, "module_id"),
+                file_type = get_parameter(kwargs, "file_type"),
+                create_time_start = get_parameter(kwargs, "create_time", [None, None])[0],
+                create_time_end = get_parameter(kwargs, "create_time", [None, None])[1],
+                pipeline_id = get_parameter(kwargs, "pipeline_id", ""),
+                filename = get_parameter(kwargs, "filename"),
+                limit = get_parameter(kwargs, "limit", 0)
+            ),metadata = get_auth_headers())
+
+            if resp.success:
+                return Result.ok_data(data=from_proto_model_list(OtherDataRecord, resp.records)).append("totalCount", resp.totalCount)
+            else:
+                return Result.error(message = str(resp.error.detail))
+
+        except grpc.RpcError as e:
+            return Result.error(message="%s:%s" % (e.code().value, e.details()))
+
+
+    def get(self, **kwargs):
+        '''  fetch a record from database
+
+        parameter kwargs:
+            id : [int] 
+
+        return csst_dfs_common.models.Result
+        '''
+        try:
+            resp, _ =  self.stub.Get.with_call(otherdata_pb2.GetOtherDataReq(
+                id = get_parameter(kwargs, "id")
+            ),metadata = get_auth_headers())
+
+            if resp.record is None or resp.record.id == 0:
+                return Result.error(message=f"data not found")  
+
+            return Result.ok_data(data = OtherDataRecord().from_proto_model(resp.record))
+
+        except grpc.RpcError as e:
+            return Result.error(message="%s:%s" % (e.code().value, e.details()))   
+
+
+    def write(self, **kwargs):
+        ''' insert a otherdata record into database
+
+        parameter kwargs:
+            obs_id: [str]
+            detector_no : [str]
+            module_id : [str]
+            file_type : [str]
+            filename : [str]
+            file_path : [str]            
+            pipeline_id : [str]
+
+        return csst_dfs_common.models.Result
+        '''   
+
+        rec = otherdata_pb2.OtherDataRecord(
+            id = 0,
+            obs_id = get_parameter(kwargs, "obs_id"),
+            module_id = get_parameter(kwargs, "module_id", ''),
+            file_type = get_parameter(kwargs, "file_type"),
+            detector_no = get_parameter(kwargs, "detector_no"),
+            filename = get_parameter(kwargs, "filename", ""),
+            file_path = get_parameter(kwargs, "file_path", ""),
+            pipeline_id = get_parameter(kwargs, "pipeline_id")
+        )
+        def stream(rec):
+            with open(rec.file_path, 'rb') as f:
+                while True:
+                    data = f.read(UPLOAD_CHUNK_SIZE)
+                    if not data:
+                        break
+                    yield otherdata_pb2.WriteOtherDataReq(record = rec, data = data)
+        try:
+            if not rec.file_path:
+                return Result.error(message="file_path is blank")
+            if not os.path.exists(rec.file_path):
+                return Result.error(message="the file [%s] not existed" % (rec.file_path, ))
+            if not rec.filename:
+                rec.filename = os.path.basename(rec.file_path)
+
+            resp,_ = self.stub.Write.with_call(stream(rec),metadata = get_auth_headers())
+            if resp.success:
+                return Result.ok_data(data=OtherDataRecord().from_proto_model(resp.record))
+            else:
+                return Result.error(message = str(resp.error.detail))
+        except grpc.RpcError as e:
+            return Result.error(message="%s:%s" % (e.code().value, e.details()))