The invention provides a wheelset imbalance alignment device. The wheelset imbalance alignment device includes a base detachably arranged on a car axle, wherein the center of a top surface of the baseis provided with an alignment plate, a bottom end of the alignment plate is fixed on a reset device, the reset device is fixed on the base, the alignment plate in the alignment process can be made bythe reset device to be in a vertical state constantly, a small hole is arranged on the alignment plate along the axis direction of the car axle, one side of the alignment plate is provided with a laser pointer on the base, the light emitted by the laser pointer and the axial line of the car axle are parallel, the laser point is fixed on the base through a support, the other side of the alignmentplate is provided with an identifier plate on the base, and the light emitted by the laser point can penetrate through the small hole and irradiates on the identifier plate. The wheelset imbalance alignment device is advantaged in that the structure is simple, operation is convenient, the light emitted by the laser pointer can penetrate through the small and drop on the identifier plate to realizealignment of wheels, through cooperation of the light and the small hole, mounting precision is greatly improved, mounting quality of the wheelset is guaranteed, and work efficiency is greatly improved.