It is mainly used to test and calibrate the touch function of the trackpad, key feedback, open and short circuit and other test items, which can simulate the touch function of the finger to the touch interaction module, and accurately feedback the touch signal to improve the user touch experience. At the same time, the device adopts the modular circuit and gas circuit design to quickly plug and plug, which can be compatible with more product type change requirements, and reserve the option of full automatic upgrade.