Based on the technical requirements of 3 MW wind turbine shaft and the previous processing technology, a new processing technology and special fixtures were designed to improve the quality of parts processing. A method of measuring the parts with standard shaft was put forward by which the measurement benchmarks of both the suppliers and users were unified. Thus the accuracy and efficiency of measuring were improved. A special rod meter was designed as a measuring tool to replace the common measuring tools, so labor cost was reduced and measuring accuracy and efficiency were improved.