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This paper introduces a high-reliability, high-precision and low-cost wireless positioning device on Rocket. The device Acquires the installation location in real time through calculating satellite navigation message of the beidou System , and sends the location data to the ground handheld terminal utilizing the short message communication function of Beidou RDSS service. With the help of the wireless positioning device, ground search personnel can find the remains of the rocket faster than before. In product designing, not only the realization of functional performance index is considered, but also aimed at the reliability of equipment. The overall scheme is designed from the aspects of autonomously control of Navigation signal, margin of upstream and downstream communication links, environmental adaptability of equipment operation and redundancy design of important modules. The results of the flight text show that the horizontal positioning accuracy of the wireless positioning device is better than 5meters, and the expected target of debris recovery is realized.