The main objectives were to study the property of holding water of yellow white soil and the effects of applying organic matter on its holding and supplying water by tensiometer. The results of study demonstrated that:(1) In range of tensiometer measurement, there was a kind of obvious linear relationship between soil water suction and content of the yellow white soil; (2) The organic matter can improve the property of soil holding water, and the effect of cow dung is better than wheat straw. And applying organic manure could also improve the upper limit of soil available water, cut down the lower limit, raise the content of soil available water and strengthen the available property of soil water.