The temperature rise of the motor was one of the main factors that affected the performance and reliability of the motor. At present, the three dimensional temperature field simulation method was adopted, but because of the complex structure of winding and the strong coupling of heat flux field,which affecting the accuracy of the calculation results largerly. The simplified modeling method of 3 kinds of stator end winding was established, and the simulation and analysis of the heat flux field of the induction motor was carried out by using the Fluent simulation software platform. The results showed that the model could be simplified as a twodimensional stator end winding structure of straightening bent upward, the simplified method had both advantages of short modeling time and high simulation precision. The conclusions could be used as a reference for the simulation of the heat flux field and shorting the design period of the motor.