diff --git a/README.md b/README.md
index d73dc9d..99643dc 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,48 @@ For the testing set, we adopt the validation set of COCO2017, which contains rel
 The data files are at [./datasets/Main/](./datasets/Main/).
 <!-- And the codes for creating these files are at [datasets/coco_utils](datasets/coco_utils) -->
 
+## Train
+Train with PAD:
+
+The PAD module is implemented in [./detectron2/modeling/roi_heads/roi_heads.py](./detectron2/modeling/roi_heads/roi_heads.py),where the file generated by selective search needs to be loaded. The code that generates these files is in the [./datasets/save_selective_search.py](./datasets/save_selective_search.py).
+
+
+
+
+## Inference
+Inference with CEC
+```
+python tools/train_net.py --num-gpus 3\
+                          --eval-only --config-file ./configs/OWOD/t1/t1_test.yaml \
+                          SOLVER.IMS_PER_BATCH 6 SOLVER.BASE_LR 0.005 \
+                          OUTPUT_DIR "./output/t1/test_dir/" \
+                          MODEL.WEIGHTS "/Path/To/Your/Model" \
+                          OWOD.GENERATE_CALI False \
+                          OWOD.CALI_PATH "/home/RE-OWOD-main/analysis/t1_REOWOD_train_scores_cali_07" \
+                          OWOD.UNK_THRESH 0.6
+```
+
+Inference without CEC
+```
+python tools/train_net.py --num-gpus 3\
+                          --eval-only --config-file ./configs/OWOD/t1/t1_test.yaml \
+                          SOLVER.IMS_PER_BATCH 6 SOLVER.BASE_LR 0.005 \
+                          OUTPUT_DIR "./output/t1/test_dir/" \
+                          MODEL.WEIGHTS "/Path/To/Your/Model" \
+                          OWOD.GENERATE_CALI True
+```
+
+If you want to generate CEC pickle file with train datasets, you need to repalce "./detectron2/evaluation/evaluator.py" with "./detectron2/evaluation/evaluator_cali.py".
+Remember to add current stage to CEC pickle files' name in "./detectron2/evaluation/evaluator_cali.py".
+```
+python tools/train_net.py --num-gpus 3\
+                          --eval-only --config-file ./configs/OWOD/t1/t1_test.yaml \
+                          SOLVER.IMS_PER_BATCH 6 SOLVER.BASE_LR 0.005 \
+                          OUTPUT_DIR "./output/t1/test_dir/" \
+                          MODEL.WEIGHTS "/Path/To/Your/Model" \
+                          OWOD.GENERATE_CALI True
+```
+
 
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 ## Citation