The invention relates to the field of a capacitor. Aiming at the technical problem that an existing capacity cannot be used in an extremely cold temperature, warming equipment of a capacitor is provided. The warming equipment comprises a shell, a heat preservation cover, a support rod and a handle, wherein an installation hole is formed in the shell, the heat preservation cover is fixedly arrangedin the shell, an installation cavity is formed between the heat preservation cover and the shell, a friction bottom layer is arranged on an outer surface of the heat preservation cover, the support rod is arranged in the installation cavity, the support rod has a shape matched with the shape of the outer surface of the heat preservation cover, the support rod is rotatably arranged in the installation hole, the support rod rotates around the heat preservation cover in the installation cavity by taking the installation hole as a circle center, a fixed rod made of a thermal expansion and cold shrinkage material is arranged on the support rod, one end of the fixed rod is fixedly connected with the support rod, a friction body is fixedly arranged at the other end of the fixed rod and generatesfriction with the friction bottom layer to generate heat, and the handle is arranged outside the shell and is used for driving the support rod to rotate.