The classic modeling methods always take the vehicle hood temperature as a fixed value. However, the field test results show that the temperature distribution of the hood is obviously nonuniform while the engine works. Taking the actual structure of the vehicle and various factors into account, the temperature field distribution model of the vehicle hood is set up and its rationality is further verified, with the influence of the radiation angle coefficient being analyzed. Moreover, the temperature field model of the vehicle hood is simulated and verified. The results show that the model of the hood temperature field is consistent with the actual situation.