The invention provides an improved technology for machining thread ring gages. The improved technology comprises the steps of a, carrying out heat treating and quenching on blanks of the thread ring gages; b, preparing turning tools and selecting parameters; c, carrying out finish turning on ring gage holes and threads. The improved technology has the advantages that the production cost is low, the energy is saved, the consumption is lowered, and the machining efficiency and the machining quality of the thread ring gages are greatly improved.