A fan module and an electronic device are provided. The fan module includes a hub and a plurality of blades. The blades are mounted around the hub, and each of the blades has a first end that is connected to a periphery of the hub and a second end that is relatively away from the hub. A first axial direction distance in the axial direction is provided between a first point of the first end that is relatively away from the top surface and the top surface. A second axial direction distance in the axial direction is provided between a second point of the first end that is near the top surface and the top surface. A ratio of the second axial direction distance to the first axial direction distance is 0.4 to 0.5.