The present invention discloses a mechanical sensor array calibration device and the working method thereof. The device comprises locating transmission part and control part which is electrically connected with the locating transmission part; wherein, the locating transmission part comprises calibrated working platform and pressure head testing part; the pressure head testing part is connected with a force sensor through an extension head of a Z-directional linear stepper motor. Using the working method of the device adopts three stepper motors as the driving source; two stepper motors drive the coordinate motion of the slides on the guide rail to finish the location of coordinate point on the working platform; an extension of a linear stepper motor drives the pressure head to exert forceon the tested sensor; when the force exerted by the pressure head achieves the set pressure valve, the singlechip collects the output of the tested sensor and the force sensor and the position coordinate of the tested sensor. The present invention is able to execute the choose and configuration of the calibrating mode and process according to the specific sensor array and the specific calibratingdemand so as to enlarge the using range of the device.