The retraction and release device of optoelectronic composite cable is a kind of control equipment to retract and release the cable of the lift-off platform. According to the flight requirements of the lift-off platform， we need to control the cable in real time， and ensure the information transmission and energy supply between the sky and the ground. Aiming at the complex structure and low strength of retraction and release device， and the problems of poor reliability of system， a miniaturization and intelligent device of photoelectric composite cables is studied and designed in this paper， and the tension control method is proposed. The system test verifies that the tension value of the cable is maintained between 0.5~2 N， the response time is 100 ms， and reliability of the equipment are greatly improved.