Rotating Parachute Systems provide a stable platform for scanning equipment. Usually, it is difficult to meet all the needs of some elements such as: velocity of descent, rate of spin, and submunition inclination angle against vertical and dynamic stability. A 7degreeoffreedom dynamic model is developed for the convenience of analyzing the attitudes of the Rotating Parachute Systems. Compared with Euler method, the complicated restraint forces are avoided and the odds in simulating process are solved. The movement law of the parachutebomb system and the scan laws of sensitive implement are gained by an algorithm question. The results can be a theoretical reference for optional design of the parachuteload system.