The precipitation lapse rate(altitude effect of precipitation) and the zone of maximum precipitation in Tianshan and Qilian Mountains regions are studied using TRMM(Tropical Rainfall Measuring Mission) precipitation data.The results indicate that the annual TRMM precipitation compares well with the gauge observation over the two regions,the precipitation lapse rate and the zone of maximum precipitation can be quantified using the TRMM data.The annual precipitation in the Tianshan Mountain region is well cor...