Abstract: The application of the underground heat exchange system in Chinese protected Cultivation vegetable production for solar energy storage and heating in the vinyl-house has been studied. the result of the experiment showed that the underground heat exchange system can store solar energy and useit for heating in the vinyl-house during the night effectively. There fore, the difference of air temperature inside and outside the vinylhouse during the night can be maintained as much as 10℃ and at sametime the soil temperature in the vinyl-house can be raised accordingly. the microclimate conditions suitable for transplanting vegetables in the vinylhouse with underground heat exchange system is 20-30 days earlier than ordinary one in the spring time. After further improving and perfecting this system may make the transplanting date in the vinyl-house coming even earlier than one month. In addition, a model of the underground heat exchange system has been developed according to the experimental data.