The invention relates to the technical field of logistics transportation, in particular to an intelligent trolley of an intelligent logistics system. The intelligent trolley comprises a trolley body, two U-shaped guide rails are arranged on the two sides of the top of the trolley body at intervals, sliding sleeves are slidably connected to the outer sides of the U-shaped guide rails, a loading plate is fixedly installed at the tops of the sliding sleeves, and a sleeve is fixedly installed at the top of the trolley body. In the braking state, the loading plate pulls the L-shaped rod to move, so that the piston moves in the sleeve, air inlet airflow can be generated in the state, the airflow pushes the blocking piece to turn over, after braking is completed, the piston resets under the action of the spring, exhaust is started at the moment, due to the fact that the blocking piece covers the front portion of the through hole at the moment, the airflow can only be exhausted through the exhaust hole. Due to the fact that the hole diameter of the exhaust hole is small, the buffering effect is achieved, the carrying plate can be slowly reset, the problem that objects slide out of the carrying plate before and after braking is avoided, and the design is reasonable.