Abstract: In the growth stage of winter wheat(from April to May in 2002),the canopy temperature,air temperature,volumetric soil water content were measured for the non-irrigation winter wheat.Beside,the canopy temperature,canopy-air temperature difference and volumetric soil water content are analyzed in this paper.The results indicate that the canopy temperature at 14:00 can reflect soil water content of the soil layen in 20 cm deep,but relativity in other soil levels has bigger fluctuation;the change of the volumetric soil water content in the depth 40 cm can be preferably reflected by the changes of canopy-air temperature difference at 14:00,the relational coefficients are 0.988 66(20 cm),0.993 89(40 cm),respectively which indicate that it can used as the base for monitoring regional soil water content through the retrieval regional canopy temperature; And during jointing stage and grain filling stage,the higher precision by canopy-air temperature difference simulating volumetric soil water content can be used as an empirical model for monitoring regional volumetric soil water content.