An aid pad of external compression treatment course includes a pad body and at least one adapter tube. The adapter tube is mounted in the pad body with two ends extending out of the pad body. The pipelines of the gas envelopes are collected in the pad body to beautify the appearance. The gas source, the controller and a certain number of gas envelopes are cooperatively integrated into the external compression equipment for executing the external compression treatment course. Therefore, the aid pad can eliminate the randomness of the conventional external compression equipment, reduce the cost and volume of the external compression equipment and have higher mobility in use. The aid pad can be quickly transferred to different sites without limitation of the mattress form. Therefore, the pain of a user (patient) can be eased in a more positive and reliable manner.
