The utility model discloses a combined security tool box for electric line operation, which comprises a box body. A portable earthing wire slot, a security band slot, a personal protective earthing wire slot, a conductive shoe slot, a drying agent slot, and an electroscope slot are respectively provided inside the box body, and an insulation glove slot is further arranged on the right side of the box body. A handle and two fasteners are arranged on both sides of the box body. Combined tools for the electric line operation have the novel and appropriate combination, and types thereof comprise ordinary tools for the electric line that are frequently used. Therefore, the use is convenient, and the product is especially suitable for use in the field of live working for electric lines.