Sweaty hands first need to find the cause of the cause. Clinically the two most common causes: 1, objective causes: such as very hot, high temperature, or eat stimulating food, will cause a large amount of sweat secretion, which may need to improve the above situation. For example, to a relatively moderate temperature, or try not to eat particularly spicy food when it is hot, do not drink; 2, there are some people are due to emotional tension, poor regulation of the vegetative nervous system, which may require their own psychological regulation. If the sweat is not much, you can use antiperspirant, light can be used, for example, boric acid, copper sulfate and other liquids to soak the hand, there are astringent, antiperspirant effect; 3, hyperhidrosis: especially in the summer or a little bit to eat stimulating things, hand sweat is very much, has affected the normal life, at this time, you can use like a local injection of botulinum toxin, has a very good therapeutic effect.