diff --git a/paddlepalm/__init__.py b/paddlepalm/__init__.py
index 4010d841a916b5fc77971adba1584a83e7d157e5..20f446fbf9063f08f13b45543b583ca58445d4dd 100644
--- a/paddlepalm/__init__.py
+++ b/paddlepalm/__init__.py
@@ -1,15 +1,15 @@
-import downloader
+from . import downloader
 # from mtl_controller import Controller 
 #import controller
-import optimizer
-import lr_sched
-import backbone
-import reader
-import head
+from . import optimizer
+from . import lr_sched
+from . import backbone
+from . import reader
+from . import head
 
 
-from trainer import Trainer
-from multihead_trainer import MultiHeadTrainer
+from .trainer import Trainer
+from .multihead_trainer import MultiHeadTrainer
 
 #del interface
 #del task_instance
diff --git a/paddlepalm/backbone/__init__.py b/paddlepalm/backbone/__init__.py
index 9f98d7a6659548e322b5218c54bf53f73562b99d..bd619e257712ba1ce4403ffc3e9fae23101d32fa 100644
--- a/paddlepalm/backbone/__init__.py
+++ b/paddlepalm/backbone/__init__.py
@@ -1,4 +1,4 @@
 
-from ernie import ERNIE
-from bert import BERT
+from .ernie import ERNIE
+from .bert import BERT
 
diff --git a/paddlepalm/distribute/__init__.py b/paddlepalm/distribute/__init__.py
index bff6594676be1cd2e5e7f3882903a67a50e1fcfa..6692331bcc9278c2f930ad93d65c889e14a1ffea 100644
--- a/paddlepalm/distribute/__init__.py
+++ b/paddlepalm/distribute/__init__.py
@@ -5,5 +5,5 @@ import multiprocessing
 gpu_dev_count = int(fluid.core.get_cuda_device_count())
 cpu_dev_count = int(os.environ.get('CPU_NUM', multiprocessing.cpu_count()))
 
-from reader import yield_pieces, data_feeder, decode_fake
+from .reader import yield_pieces, data_feeder, decode_fake
 
diff --git a/paddlepalm/downloader.py b/paddlepalm/downloader.py
index 74b70e357d4a2a9fe22024bf9c91545959ffcc4b..06164c89971bda33d348f3dab0f581d35715b701 100644
--- a/paddlepalm/downloader.py
+++ b/paddlepalm/downloader.py
@@ -1 +1 @@
-from _downloader import *
\ No newline at end of file
+from ._downloader import *
diff --git a/paddlepalm/head/__init__.py b/paddlepalm/head/__init__.py
index 5a52e4c3b8a41fd203cf60fe2a6b2ab40fa319b2..7a442768ba7f64421b5c914a82003114e8de2ba7 100644
--- a/paddlepalm/head/__init__.py
+++ b/paddlepalm/head/__init__.py
@@ -1,6 +1,6 @@
 
-from cls import Classify
-from match import Match
-from ner import SequenceLabel
-from mrc import MRC
-from mlm import MaskLM
+from .cls import Classify
+from .match import Match
+from .ner import SequenceLabel
+from .mrc import MRC
+from .mlm import MaskLM
diff --git a/paddlepalm/lr_sched/__init__.py b/paddlepalm/lr_sched/__init__.py
index 2ec4ed386f8e83385db8459410ed72ddf66c3023..91b3891b62bacf78ee6ef94fd61fdad307d28fde 100644
--- a/paddlepalm/lr_sched/__init__.py
+++ b/paddlepalm/lr_sched/__init__.py
@@ -1,4 +1,4 @@
 
-from slanted_triangular_schedualer import TriangularSchedualer
-from warmup_schedualer import WarmupSchedualer
+from .slanted_triangular_schedualer import TriangularSchedualer
+from .warmup_schedualer import WarmupSchedualer
 
diff --git a/paddlepalm/optimizer/__init__.py b/paddlepalm/optimizer/__init__.py
index 72430e58230e585317fb1e3397a6f8763775adf3..ae2934082b70785410be5a8424cef508e69bd383 100644
--- a/paddlepalm/optimizer/__init__.py
+++ b/paddlepalm/optimizer/__init__.py
@@ -1,2 +1,2 @@
 
-from adam import Adam
+from .adam import Adam
diff --git a/paddlepalm/reader/__init__.py b/paddlepalm/reader/__init__.py
index 0162c412f29fef662399ade6a73966db8405a579..1de3d76051ed4a2f6013e1a0dc9c8456f05d004d 100644
--- a/paddlepalm/reader/__init__.py
+++ b/paddlepalm/reader/__init__.py
@@ -1,6 +1,6 @@
 
-from cls import ClassifyReader
-from match import MatchReader
-from seq_label import SequenceLabelReader
-from mrc import MRCReader
-from mlm import MaskLMReader
+from .cls import ClassifyReader
+from .match import MatchReader
+from .seq_label import SequenceLabelReader
+from .mrc import MRCReader
+from .mlm import MaskLMReader
diff --git a/paddlepalm/utils/__init__.py b/paddlepalm/utils/__init__.py
index d362471c9c3312bd333d7d2b21663b5d5cc6b500..6fee7b30bf215f6ab94cd833181e76a5afe6ec57 100644
--- a/paddlepalm/utils/__init__.py
+++ b/paddlepalm/utils/__init__.py
@@ -1,4 +1,4 @@
 
-import basic_helper
-import config_helper
+from . import basic_helper
+from . import config_helper
 
diff --git a/paddlepalm/utils/basic_helper.py b/paddlepalm/utils/basic_helper.py
index a9d503472d855cc70db2ca6d7f8eddd31a69b223..a6b997cb1938999c05e3a41a4b6403b566ea2005 100644
--- a/paddlepalm/utils/basic_helper.py
+++ b/paddlepalm/utils/basic_helper.py
@@ -2,7 +2,7 @@
 import os
 import json
 import yaml
-from config_helper import PDConfig
+from .config_helper import PDConfig
 import logging
 from paddle import fluid