diff --git a/hb_internal/build/build.py b/hb_internal/build/build.py
index f0b70f6177fb5cdcf1e284ab45c8cfe418e794dd..e10ecf5d76d75a85b85e5d27564db5147fc96140 100644
--- a/hb_internal/build/build.py
+++ b/hb_internal/build/build.py
@@ -131,7 +131,7 @@ def add_options(parser):
                         default='default')
     parser.add_argument('--build-variant',
                         help='specifies device operating mode',
-                        default='user')
+                        default='root')
     parser.add_argument('--share-ccache',
                         default="",
                         help='It is customized path to place ccache, which allow'
diff --git a/hb_internal/build/build_process.py b/hb_internal/build/build_process.py
index c2fbaec19f1f8a82ac5b109d7dc981fb48ffe822..c8e9f7a3a3cdf37b834f92bc191a579bd5a402bf 100644
--- a/hb_internal/build/build_process.py
+++ b/hb_internal/build/build_process.py
@@ -158,7 +158,6 @@ class Build():
         else:
             if not cmd_args.get('disable_post_build'):
                 post_build = PostBuild(self.config)
-                post_build.patch_ohos_para(cmd_args)
                 if not cmd_args.get('disable_package_image'):
                     post_build.package_image()
                 if not disable_post_build_args or 'output_part_rom_status' not in disable_post_build_args:
@@ -236,6 +235,8 @@ class Build():
         os_level = self.config.os_level
         if cmd_args.get('build_variant'):
             self.register_args('build_variant', cmd_args.get('build_variant'))
+        if cmd_args.get('device_type'):
+            self.register_args('device_type', cmd_args.get('device_type'))
         gn_cmd = [
             gn_path,
             'gen',
diff --git a/hb_internal/common/misc.py b/hb_internal/common/misc.py
index d239a35e8df184f62b2eba2f0b24b6d1db048691..ce1d1642731180329fcc260c053db708df86493e 100644
--- a/hb_internal/common/misc.py
+++ b/hb_internal/common/misc.py
@@ -20,7 +20,7 @@ import os
 import subprocess
 from datetime import datetime
 from distutils.spawn import find_executable
-from hb_internal.common.utils import OHOSException, exec_command
+from hb_internal.common.utils import exec_command
 from hb_internal.common.utils import hb_warning
 
 
@@ -108,39 +108,6 @@ class PostBuild:
                 self.get_warning_list()
         if not disable_post_build_args or 'compute_overlap_rate' not in disable_post_build_args:
                 self.compute_overlap_rate()
-
-    def patch_ohos_para(self, cmd_args):
-        ohos_para_data = []
-        ohos_para_file_path = os.path.join(self._out_path, 'packages/phone/system/etc/param/ohos.para')
-        if not os.path.exists(ohos_para_file_path):
-            return
-        with open(ohos_para_file_path, 'r', encoding='utf-8') as ohos_para_file:
-            for line in ohos_para_file:
-                ohos_para_data.append(line)
-        if cmd_args.get('device_type') and cmd_args.get('device_type') != 'default':
-            for i, line in enumerate(ohos_para_data):
-                if ohos_para_data[i].__contains__('const.build.characteristics'):
-                    ohos_para_data[i] = 'const.build.characteristics=' + cmd_args.get('device_type') + '\n'
-                    break
-        if cmd_args.get('build_variant'):
-            if cmd_args.get('build_variant') != 'user' and cmd_args.get('build_variant') != 'root':
-                raise OHOSException('Error: --build-variant support user or root mode currently')
-            for i, line in enumerate(ohos_para_data):
-                if ohos_para_data[i].__contains__('const.secure'):
-                    if cmd_args.get('build_variant') == 'user':
-                        ohos_para_data[i] = 'const.secure=1\n'
-                    else:
-                        ohos_para_data[i] = 'const.secure=0\n'
-                if ohos_para_data[i].__contains__('const.debuggable'):
-                    if cmd_args.get('build_variant') == 'user':
-                        ohos_para_data[i] = 'const.debuggable=0\n'
-                    else:
-                        ohos_para_data[i] = 'const.debuggable=1\n'
-        data = ''
-        for line in ohos_para_data:
-            data += line
-        with open(ohos_para_file_path, 'w', encoding='utf-8') as ohos_para_file:
-            ohos_para_file.write(data)
             
     def package_image(self):
         image_path = os.path.join(self._out_path, 'packages/phone/images/')