The utility model provides a coastal waters bottom lagrange remains circulation observation system, including data transmission system, data monitoring processing system, along with flowing the movement monitoring terminal, include the cross sail along with flowing the movement monitoring terminal, watertight control storehouse, watertight antenna box, there is GPRS mobile communication antenna watertight antenna box inside, GPS big dipper positioning antenna and maritime affairs satellite communication antenna, there is the data cable in the watertight control storehouse, microcontroller, GPS beidou positioning module, GPRS mobile communication module, maritime affairs satellite communication module, the time -recorder, hydraulic pump and large capacity lead acid battery, watertight control storehouse outside is equipped with gasbag and air bag's support, the gasbag passes through the pipe and links to each other with the hydraulic pump. The utility model discloses the technique is nimble, reliable, cheap, simple structure, and easy transportation can be used to the large tracts of land input and surveys. Through the timing module can the control instrument the lift constantly to the definition that makes the observed data accord with the lagrange residual current more makes the numerical result more reliable.