In order to solve the problem that there are many models for calculating the gas-solid heat transfer coefficient in the existing numerical calculation of iron ore sintering，and the relative calculation accuracy is unclear，which leads to the difficulty in selecting the model，the accuracy of three commonly used gas-solid heat transfer coefficient calculation models is compared and analyzed by combining numerical simulation and sinter cup test. The results show that the increase of convective heat transfer coefficient can effectively increase the temperature of the solid phase during ignition and reduce the subsequent sintering rate and the heat storage capacity of the material layer，resulting in a larger O₂ mass fraction and a lower CO₂ mass fraction in the outlet gas composition. Among the three models，the O₂ mass fraction obtained by the calculation model with the maximum convective heat transfer coefficient is closer to the sinter cup test，while the CO₂ mass fraction and sintering rate obtained by the calculation model with medium convective heat transfer coefficient are closer to the test.