The invention relates to the technical field of wire installation, and discloses a wire fixing device. The wire fixing device comprises a fixing sleeve arranged on a laying surface of a wire and a spiral steel bar allowing the wire to penetrate through, the fixing sleeve is provided with a clamping device and a pulling force sensor, the pulling force sensor is connected with a display through a controller, an inner wall of the fixing sleeve is provided with a spiral guide groove allowing the spiral steel bar to be screwed in, a clamping member fixing one end of the spiral steel bar is arrangedin the spiral guide groove, the clamping member can be manually or automatically controlled, and the other end of the spiral steel bar penetrates through the clamping device and extends out of the fixing sleeve. According to the scheme, the problem that the wire fixing device cuts an outer wall of the wire and fails to clamp the wire due to the effect of expansion with heat and contraction with cold of the wire can be solved.