The invention discloses a production technology for an anti-loosening double-segment wire screw. The production technology includes the following steps that S1, in wiredrawing, a low-carbon steel wireis machined through a steel wire rod wiredrawing machine to have a needed diameter; S2, in balling, the low-carbon steel wire after wiredrawing is subjected to balling treatment through a balling furnace; S3, in blanking, the low-carbon steel wire is selected and cut into a steel wire segment with a fixed length; S4, in heading, a heading machine is adopted for machining one end of the steel wiresegment into a screw head through a die; S5, in tail pointing, a tail pointing machine is adopted for machining the other end of the steel wire segment into a double-segment wire; S6, in thread rolling, a thread rolling machine is adopted for machining the periphery of the steel wire segment into threads; S7, heat treatment is performed, wherein normalizing and quenching operation is sequentiallyoperated on the screw, wherein normalizing temperature is 600-650 DEG C, and quenching temperature is 760-780 DEG C; S8, galvanizing is performed. The machining technology for the screw is simple, ascrew formed through machining in an early period can be effectively subjected to heat treatment, in this way, the overall performance of the screw is greatly improved, high surface strength and rigidity of the screw are realized, and the quality of the screw is guaranteed.