The three axis (XYZ) servo-control automatic key loading-curve tester which is Hi-tech machine integrated the precise structure, auto control and precise pressure control into one is developed and manufactured by our company. This tester has these advantages such as powerful functions, easy programmable, easy operation and low price, it is suitable for the test for the keyboard of cell phone,the keyboard of the coputer, the keyboard of ATM, the keyboard of remote controller of TV/air conditioner. This tester can make the operational platform to work in the expected track by the movement controller, electrical motor and moving platform; the test software can automatically collect the data of load~displacement of the key, and create Load~displacement curve accordingly, automatically save the testing data and automatically judge pass or Fail. We got the patent for this tester in China, the patent No.:ZL202022039359.3