In order to improve the applicability and practicability, we design a new laser target practice system without the connection between the gun and target. In this system, we use digital modulation to control the shooting-system, which can send out a series of light pulses loading information. The information is extracted in the receiving system by the scanning process and decoding process. In addition, we use the polymer optical fibers as the passage between the target plane and the photo-electronic detector...