By studying the ship's liquid tank coating,this paper analyzes the working principle and the cur-rent problems of the existing adhesion test methods for liquid tank coatings of ships,and summarizes the design re-quirements for a coating adhesion testing device for ship tanks based on the pull-off test to solve the existing prob-lems.The paper designs a new type of ship tank to coat adhesion testing device via the AutoCAD software platform ac-cording to the design requirements and based on the existing testing devices.This paper introduces the working prin-ciple and main components of the device and analyzes the feasibility of the device in terms of technology,structure and operation.The results show that the device is feasible.