Automobile seat mounting structure

The invention relates to an automobile seat mounting structure which comprises a backrest framework, a first support and a first hinge assembly. The first hinge assembly comprises a connecting pin, a spring and a limiting bush. The right end of the connecting pin is connected to the left side of the backrest framework, the connecting pin is sleeved with the spring and the limiting bush, the connecting pin can rotate relative to the limiting bush, the limiting bush is provided with a limiting part, and the outer diameter of the limiting part is gradually increased from left to right. The first support is used for connecting with the automobile body. The first support is provided with a strip-shaped hole extending in the vertical direction and a mounting hole communicated with the lower end of the strip-shaped hole, the outer diameter of the right end of the limiting part is larger than the diameter of the mounting hole, the diameter of the mounting hole is larger than the width of the strip-shaped hole, and th