Set top box with high heat dissipation

The invention discloses a set top box with high heat dissipation. The set top box comprises a housing, the housing is internally provided with an electronic system, the housing comprises a bottom surface, and the peripheral edge of the bottom surface vertically extends upwards to form a circumferentially enclosed frame body; the upper end surface of the frame body is also provided with one cover plate, and the cover plate is sealed with the frame body to form an accommodation cavity; the back surface of the housing is provided with a hollowed grating member; horizontal stripes are regularly arranged at intervals on the grating member; heat dissipation long holes are arranged at positions adjacent to the horizontal stripes; and the set top box with high heat dissipation further comprises a remote controller. According to the invention, the back surface of the housing is provided with the hollowed grating member so that heat dissipation is facilitated; and the peripheral edge of the bottom surface vertically ex