The assembled solar greenhouse has been widely applied in Gansu Province in recent years. This paper carried out observation on temperature environment performance of 4 kinds solar greenhouses assembled with different specifications，built in Jingyuan County，Gansu Province. The results indicated that these 4 kinds of assembled greenhouses had very different temperature conditions，due to the different parameters of greenhouse construction. In January，there were 4.1 ℃ differences in minimum temperature. Temperature in the assembled solar greenhouse rose and cooled rapidly. In January，the average temperature rising in assembled solar greenhouse was 2.4-5.6 ℃ higher than that of the ordinary solar greenhouse. The average maximum temperature could even reach 35.7 ℃，and average minimum temperature was 5.7-9.8 ℃，1.2-5.3 ℃ lower than that of the ordinary solar greenhouse. Along with the rise of outside temperature，the temperature condition in March at assembled solar greenhouse was generally better than that of the ordinary solar greenhouse. The assembled solar greenhouses in Jingyuan County of Gansu Province were suitable for producing leafy vegetables in January. After February，along with the rise of outside temperature and improvement of greenhouse conditions，the production of early spring solanaceous fruit vegetables and cucurbits should be the first choice.