The invention provides a heat radiation device and power equipment equipped with the heat radiation device. The heat radiation device comprises a heat radiation body. The surface of the heat radiationbody is provided with an installing part used for installing electronic devices. A heat radiation passage arranged to be close to the installing part is formed in the heat radiation body. The heat radiation passage is provided with a passage inlet and a passage outlet. A main water inlet channel and a main water outlet channel which penetrate through the heat radiation body are also formed in theheat radiation body, wherein the passage inlet is communicated with the main water inlet channel, and the passage output is communicated with the main water output channel. According to the heat radiation device, the three-way pipe does not need to be additionally arranged for diverging and converging the cooling water so that the structure of the heat radiation device can be simplified; and large space occupation of the flange plate of the three-way pipe can be avoided so that the problem that a part of electronic devices cannot be installed can be solved.