The present invention provides an automatic test method and an apparatus using the same for testing functions of a product by automatically pressing keys of the product. The automatic test method includes the steps of: inputting motion parameters of at least two driven mechanisms into a microcomputer; producing pulse waves by a motion control card disposed in the microcomputer after the microcomputer handling the motion parameters of the driven mechanisms; leading at least one touch head to move along a first direction and a second direction perpendicular with the first direction until the touch head being above the key of the product by the driven mechanisms after receiving the pulse waves; and pressing the key to test the function of the product through depressing the touch head.