Abstract: The paper aims to study the temperature field distribution and insulation performance of a new double-span and double-film covered plastic greenhouse. It was based on the temperature and light recording data from GL820 insulated multi- channel data recording, medium- length color paperless recorder, photoelectric total radiation sensor V2.0 in the new double-span and double-film covered plastic greenhouse on March 8, 9, and 10, 2016. The MATLAB software was used to fit the two-dimensional temperature field and image rendering. The results showed that 06:01 had the minimum temperature inside the greenhouse. The lowest temperature was March 9> March 8> March 10. 08:01 to 12:01 was the temperature rising period. On March 8 and 10, 12:01 to 16:01 had the highest temperature inside the greenhouse, and on March 9, 14:01 to 16:01 had the highest temperature inside the greenhouse. The greenhouse temperature at 22:01 was March 8 and March 10> March 9. The temperature rose from the lower part of the greenhouse at 09:01 on the cloudy day March 8 and the cloudy and sunny day March 9. The upper part of the greenhouse warmed up faster from 2:01 to 16:01. The upper part of the greenhouse cooled faster from 20:01 to 22:01. The temperature rose from the upper part of the greenhouse from 9:01 on the sunny day March 10. 12:01 to 16:01 had the highest temperature for 3 days, and the lower part of the greenhouse started to cool down at 18:01. The temperature in the upper part of the greenhouse was the lowest from 20:01 to 22:01. When the greenhouse temperature was the lowest or the highest, the temperature of highest point on the top of the greenhouse was corresponding to the greenhouse temperature. During the night from 00:01 to 08:01, the soil temperature was relatively low. The soil temperature under 10 cm was March 8> March 9> March 10. From 07:00 to 8:00 on March 10, the soil temperature under 10 cm was the lowest (11.3℃). There was a big gap between the light intensity inside and outside the greenhouse, and the light intensity was March 10> March 8> March 9. The thermophilic fruit vegetables could be planted in the middle of February in double- span and double- film covered plastic greenhouse, 25- 30 d earlier than the single- film plastic greenhouse. It has obvious advantages in arly planting in spring.