The utility model provides a piece of waterproof heat-dissipation electronic equipment, consisting of an upper shell, a lower shell, a seal silicone pad and a breather valve, wherein since the seal silicon pad is arranged between the upper shell and the lower shell, the upper shell and the lower sell are fixedly connected through screws; the breather valve is fixed at the center of the lower shell through the screws; and a PCB (Printed Circuit Board) is fixed between the upper shell and the lower shell. With the adoption of a form that the seal silicone pad is locked by the upper shell and the lower shell, air isolation zones are respectively formed between the upper shell, the lower shell and the seal silicone pad; and due to pressure difference reduction, the waterproof effect is achieved. Aiming at the heat dissipation of power devices of seal equipment, the waterproof heat-dissipation electronic equipment is provided with a waterproof and dustproof breather valve, in order that the atmospheric pressure inside and outside the shell is balanced; and additionally, the power devices are closely fixed on the internal surface of the shell, so that the heat dissipation requirements of large-power devices are met.