The car water jet motor is also called the car wiper water jet motor, which is mainly used to clean the car glass with the wiper action. The automobile water jet motor has a simple structure, relatively simple technical content, and fierce market competition. However, from the point of view of the technical means and the application of the automobile water jet motor in the technical means and the market, there is still a phenomenon that the assembly mode of the water spray motor and the spray bottle is not strong, which is a place that needs improvement. The existing water spray motor on the market is tightly sleeved on the water outlet end of the spray bottle through the water receiving end of the water spray motor to realize the assembly of the water spray motor and the water spray bottle. The assembly method is simple in structure and easy to occur. Looseness causes water leakage. Therefore, it is necessary to solve this problem and it is also an effective means to increase the competitiveness of the product market. Sailing auto parts factory-automobile water spray motor production and manufacturing manufacturer, in view of the shortcomings of the prior art, provide a car water jet motor with better firmness after assembly with the spray bottle.