Abstract: The studies show that the improving temperature effect of desert is different with the distance to the desert，which is a kind of regional pattern.There is a linear relation between the distance from oases to desert and air temperature.There are lots of functions of improving temperature effect of desert to the oases climate，i.e.being higher-temperature and full-illumination in summer，lower-temperature in winter，bigger temperature difference between day and night and so on，these profoundly affect oases characteristic and high-benefit agriculture and cultivation technique.