With features of superhigh hardness and strength, the cutting tool is broken down frequently when female thread was processed using titanium alloy. By analyzing the advantages of vibratory tapping and extruded tapping, the vibration extruded tapping method was put forward.In terms of titanium alloy rheology law, the vibration extruded tapping technological features were  analysed and one kind of vibration extruded tapper principle was offered. Adopting the new method to female thread machining, high hardness of thread can be acquired, and tap broken cases reduce significantly.