Abstract: Development of cultivation techniques of plastic film while dramatically improves crop yield, bring huge economic benefits to farmers, but also leads to soil pollution, therefore the development of degradable film is imperative. In order to discuss the effect of degradable film, maize cultivation with different film mulching of degradable film, plastic film and liquid film were done in field conditions compared with open-air maize. Effects of degradable film, liquid film on soil temperature and soil moisture were studied. The results showed that, the degradable film could increase soil temperature in 5-20 cm profile, and soil moisture in 0-40 cm profile. With the same effects of ordinary plastic film, the degradable film could increase soil temperature and keep soil moisture, and replaced the plastic film for agricultural production; however, liquid film was affected by the weather, especially rainfall, so it should be used with caution in the case of open-air cultivation.