Several methods of modelling non-standard threads in SolidWorks are analysed,the modelling process of each method is introduced in detail,the possible problems and solution techniques of each method are elaborated,and the methods are compared in terms of the degree of operation difficulty,editability,running speed,whether the generated engineering drawings conform to the national standard,whether 3D printing is possible,etc.,and the application occasions of the methods are pointed out,so that the designers can choose flexibly according to their needs.Designers can choose flexibly according to the needs.