diff --git a/cpp/tools/ppc-builder/requirements.txt b/cpp/tools/ppc-builder/requirements.txt
index aee2aa42..3d7ce2f7 100644
--- a/cpp/tools/ppc-builder/requirements.txt
+++ b/cpp/tools/ppc-builder/requirements.txt
@@ -1,4 +1,3 @@
 configparser
-requests
 toml
 uuid
diff --git a/python/ppc_common/ppc_utils/utils.py b/python/ppc_common/ppc_utils/utils.py
index 6450a4a4..5c38ee20 100644
--- a/python/ppc_common/ppc_utils/utils.py
+++ b/python/ppc_common/ppc_utils/utils.py
@@ -11,7 +11,6 @@
 from enum import Enum, unique
 
 import jwt
-from ecdsa import SigningKey, SECP256k1, VerifyingKey
 from gmssl import func, sm2, sm3
 from google.protobuf.descriptor import FieldDescriptor
 from jsoncomment import JsonComment
@@ -326,57 +325,6 @@ def make_job_event_message(job_id, job_priority, initiator_agency_id, receiver_a
     return message.encode('utf-8')
 
 
-def sign_with_secp256k1(message, private_key_str):
-    if isinstance(private_key_str, str):
-        private_key = SigningKey.from_string(
-            bytes().fromhex(private_key_str), curve=SECP256k1)
-    else:
-        private_key = SigningKey.from_string(private_key_str, curve=SECP256k1)
-    signature_bytes = private_key.sign(
-        make_hash(message, CryptoType.ECDSA, HashType.BYTES))
-    return str(encode(signature_bytes), 'utf-8')
-
-
-def verify_with_secp256k1(message, signature_str, public_key_str):
-    if isinstance(public_key_str, str):
-        verify_key = VerifyingKey.from_string(
-            bytes().fromhex(public_key_str), curve=SECP256k1)
-    else:
-        verify_key = VerifyingKey.from_string(
-            decode(public_key_str), curve=SECP256k1)
-    return verify_key.verify(decode(signature_str), make_hash(message, CryptoType.ECDSA, HashType.BYTES))
-
-
-def sign_with_sm2(message, private_key_str):
-    sm2_crypt = sm2.CryptSM2(private_key_str, "")
-    random_hex_str = func.random_hex(sm2_crypt.para_len)
-    message_hash = make_hash(message, CryptoType.GM).encode(encoding='utf-8')
-    signature_str = sm2_crypt.sign(message_hash, random_hex_str)
-    return signature_str
-
-
-def verify_with_sm2(message, signature_str, public_key_str):
-    sm2_crypt = sm2.CryptSM2("", public_key_str)
-    message_hash = make_hash(message, CryptoType.GM).encode(encoding='utf-8')
-    return sm2_crypt.verify(signature_str, message_hash)
-
-
-def make_signature(message, private_key_str, crypto_type):
-    if crypto_type == CryptoType.ECDSA:
-        return sign_with_secp256k1(message, private_key_str)
-
-    if crypto_type == CryptoType.GM:
-        return sign_with_sm2(message, private_key_str)
-
-
-def verify_signature(message, signature, public_key_str, crypto_type):
-    if crypto_type == CryptoType.ECDSA:
-        return verify_with_secp256k1(message, signature, public_key_str)
-
-    if crypto_type == CryptoType.GM:
-        return verify_with_sm2(message, signature, public_key_str)
-
-
 def exec_bash_command(cmd):
     """replace commands.get_status_output
 
diff --git a/python/requirements.txt b/python/requirements.txt
index c72f5f73..6fb0a6b7 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -27,9 +27,8 @@ pycryptodome==3.9.9
 pyjwt
 pyyaml
 mysqlclient==2.1.0
-waitress==2.1.2
+waitress==3.0.1
 sqlparse~=0.4.1
-ecdsa==0.19.0
 toolz~=0.11.1
 tenacity==7.0.0
 coincurve~=13.0.0
@@ -47,7 +46,6 @@ requests-toolbelt==0.9.1
 hdfs
 scikit-learn~=0.24.2
 gmpy2
-openpyxl
 networkx
 pydot
 snowland-smx
diff --git a/python/wedpr_ml_toolkit/wedpr_ml_toolkit/common/utils/utils.py b/python/wedpr_ml_toolkit/wedpr_ml_toolkit/common/utils/utils.py
index 303c8dae..84556a46 100644
--- a/python/wedpr_ml_toolkit/wedpr_ml_toolkit/common/utils/utils.py
+++ b/python/wedpr_ml_toolkit/wedpr_ml_toolkit/common/utils/utils.py
@@ -5,7 +5,6 @@
 import os
 import random
 from wedpr_ml_toolkit.common.utils.constant import Constant
-from urllib.parse import urlencode, urlparse, parse_qs, quote
 
 
 class IdPrefixEnum(Enum):
@@ -22,15 +21,6 @@ def generate_nonce(nonce_len):
     return ''.join(str(random.choice(Constant.NUMERIC_ARRAY)) for _ in range(nonce_len))
 
 
-def add_params_to_url(url, params):
-    parsed_url = urlparse(url)
-    query_params = parse_qs(parsed_url.query)
-    for key, value in params.items():
-        query_params[key] = value
-    new_query = urlencode(query_params, doseq=True)
-    return parsed_url._replace(query=new_query).geturl()
-
-
 def file_exists(_file):
     if os.path.exists(_file) and os.path.isfile(_file):
         return True