Abstract: a new extruded-thinning process was proposed and the relevant mould was designed which can solve the problems of low production efficiency, too fast tool wear and serious waste of machining allowance in the original processing technology about Inconel718 high strength bolt. Finally, the tests were carried out based on the metallographic structure, hardness, tensile strength, stress endurance and fatigue of the bolts. The experimental results had shown that the new technology can meet the requirements of the standard, and can improve the tensile strength, which is 3.6% higher than the original process. Therefore, the new process can completely replace the original process and provide guarantee for the mass production of products.