There are many ways to not sweat in summer: 1, congenital sweat gland dysplasia can occur, this situation needs to be identified in the hospital, if it is congenital it is very difficult to treat. 2, nerve damage can occur without sweating, you can go to a tertiary hospital neurology department to check to see if it is due to the presence of local damage to the sympathetic nerve, medulla oblongata, brain bridge, which can cause generalized or restricted sweating. This situation generally requires treatment of the original disease, generally cure the original disease, the status quo will be improved. 3, whether often exercise, if often stay in the summer in the air conditioning or cold room without exercise, generally will not sweat, and not sweat will lead to the accumulation of dampness in the body. This situation must be more exercise, more activities, do not stay inside the air-conditioned room, so it will be beneficial to health.