To determine the distribution pattern of the temperature field during the solidification process of a ZL114A aluminum alloy, a temperature measurement experimental scheme was designed based on actual working conditions. The temperature field variation curves of the metal and its shell during the solidification process were obtained using thermocouples and thermal imaging instruments. Based on the actual measured temperature curves, the interface heat transfer coefficient between the casting and the shell was calculated using the reverse calculation module in the ProCAST simulation software, and a more practical interface heat transfer coefficient was obtained. The maximum temperature difference between the simulated metal liquid temperature curve and the measured value using the interface heat transfer coefficient is 10 ℃ , and the maximum temperature difference between the simulated shell temperature curve and the measured value is 15 ℃. The results provide a reference basis for setting the interface heat transfer coefficient in aluminum alloy investment casting simulations.