Abstract: Studies on temperature simulation for double membrane greenhouses is still at the preliminary stage, and the universality of the simulation model needs to be further improved. In this study, the harmonic method was employed to simulate the air temperature variation inside the double membrane greenhouses based on the meteorological data observed from 2010 to 2014. The results indicated that: 2 order harmonic model (1st and 2nd harmonic) could well simulate the temperature variation inside greenhouses with double membrane; the temperature variation inside the greenhouse with double membrane could be well simulated with the model based on the harmonic parameters of outside temperature; the daily mean errors of model’s backward substitution were all less than 1.8℃ under different weather conditions; the daily mean errors of temperature forecasting were (1.9±1.4)℃, (2.1±1.6)℃ and (1.7±1.3)℃ for sunny day, partly cloudy day and overcast day, respectively; the model’s simulation accuracy in nighttime was higher than that in daytime; the model was with good performance when to forecast the minimum temperature as the absolute error was all less than 1.2℃ under different weather conditions; the simulation accuracy for maximum temperature was 0.5 to 1℃ larger than that of minimum temperature.