The invention discloses an automobile water pump with a damping impeller. The automobile water pump comprises a pump body. A water pump bearing is connected into the pump body in a sleeved manner. One end of the water pump bearing is guided out of the pump body. The damping impeller and a limiting block are installed on a shaft rod at the guiding-out end of the water pump bearing. The limiting block is arranged at the positions, at the two ends of the damping impeller, on the shaft rod of the water pump bearing. The damping impeller comprises a water draining impeller body and an elastic damping device. The two ends of the water draining impeller body are connected with the elastic damping device. One end of the elastic damping device is fixedly connected to the water draining impeller body, and the other end of the elastic damping device is connected to and abuts against the limiting block. By means of the above manner, the stability of the automobile water pump can be improved, damping protection is conducted on the impeller on the pump body, the impeller cannot deform when subjected to external impacts, and the service life of the pump body is prolonged.