The utility model relates to a side-mounted corner wire fixing device. The method is characterized in that the method is characterized by comprising the following steps; arched body, the arch-shaped body comprises a male body and a female body which are hinged to each other through a mandrel. An insert male part is embedded in the body male part; an insert female is embedded in the body female, afirst wire clamping assembly used for clamping a wire is arranged at the other end, opposite to the connecting end of the body male and the body female, of the body male, and a second wire clamping assembly used for clamping the wire is arranged at the other end, opposite to the connecting end of the body female and the body male, of the body female. According to the utility model, the male body and the female body form the bow shape, the bow shape is provided with the arc perimeter, the arc perimeter is matched with the arc groove of the insulator, and the wire is clamped by the first wire clamping assembly and the second wire clamping assembly, so that the wire clamping stability is improved, and the maintenance workload is reduced at the same time.