The invention discloses an automobile fan. The automobile fan comprises a rotating shell and multiple vanes. The vanes are arranged at the periphery of the rotating shell in a spaced and surrounding manner. A transmission portion is arranged at the root of each vane. Each transmission portion extends into the rotating shell. An automatic vane angle adjustment mechanism is arranged inside the rotating shell. The automatic vane angle adjustment mechanism is connected with the transmission portions in a linked manner. The automatic vane angle adjustment mechanism drives the transmission portions to rotate so that the angle of the vanes can be adjusted. The automobile fan has the beneficial effects that the automatic vane angle adjustment mechanism drives the transmission portions to rotate so that the angle of the vanes can be adjusted, therefore compared with traditional manually-adjusted fan, the automobile fan is easy to operate, and the angle of the vanes of the fan can be adjusted to the required angle at will; and due to the fact that the angle of the fan can be adjusted through the automatic vane angle adjustment mechanism, in the adjustment process, it is only needed to input a signal vale, the angle of the vanes can be adjusted so that the required wind direction and the wind power magnitude can be achieved, and the optimum cooling effect is achieved.