Using GMS infrared image data between May and July from 1996 to 2001,the relationship between temperature and the corresponding station's precipitation was analyzed.The results show the maximum rainfall did not occur at areas where the cloud-top temperature was the lowest or the cloud-top temperature gradient was the largest,but occurred at about four pixels ahead of the area with the largest temperature gradient around the lowest-temperature centers of cloud clusters.Meanwhile,using the regression method,an analysis was made of the relationship between factors such as the cloud top minimum temperature,development rate and heavy rainfall.Then based on the movement of area with the largest temperature gradient around the strong low-temperature center of cloud clusters,the possible precipitation intensity and distribution in one hour can be estimated.