Abstract: A baseball pitch-training apparatus includes a first-sampling region, second-sampling region, and a microprocessor. The first sampling region further includes a plurality of vertical and horizontal sampling units respectively along the vertical direction and the horizontal direction at the front edge of the home plate. The second sampling region is located in the rear of the first sampling region and also includes a plurality of vertical and horizontal sampling units. The sampling units of the present invention are used to generate position signals of a passing ball that will be forwarded to the microprocessor for further parsing the speed and the trajectory variation of a pitched ball, and determining whether or not the ball passed a strike region.