The invention relates to a bending method for manufacturing and processing electric power cabinets, which mainly includes the following steps, including clamping and positioning, grinding, bending operations, qualified inspection, and collecting statistics, etc., and the bending equipment used includes hollow round tubes , power rotating device, clamping device and clamping pre-bending device, the present invention can solve the following difficult problems existing in the bending and forming of the existing power and electrical cabinet profiles, a, currently the power and electrical cabinet profiles are processed into pieces with angles, It is necessary to bend the profile of the power electrical cabinet. The bending process often uses a bending machine, but the bending angle of the profile is not easy to adjust, and it is often necessary to stop the machine. After complex angle adjustments, the bending is performed The operation wastes a lot of time and reduces the production efficiency; b, when the bending machine bends the profile of the electric cabinet, the bending effect is poor due to the unstable bending process.