Bicycle trailer parking device

The utility model provides a parking device of a bicycle trailer, and belongs to the technical field of parking. A bicycle trailer parking device comprises a frame used for being installed on a wheel shaft pipe sleeve, and the frame is provided with a sliding way in the length direction of the wheel shaft pipe sleeve and a first limiting clamping groove; the parking disc is used for being installed on a wheel and is coaxial with the wheel, and a plurality of grooves which are arranged in an array mode in the circumferential direction of the axle pipe sleeve are formed in the parking disc; at least part of the parking pin is arranged in the sliding way in a sliding mode, the parking pin can move between a first position and a second position, and when the parking pin is located at the second position, the end of the parking pin can be inserted into the groove so as to limit rotation of the parking disc; the stop block is fixedly connected with the parking pin, and a second limiting clamping groove is formed in