Salt water foot soak for men generally does not have the effect of tonic kidney. With hot water with salt foot soak, has the role of auxiliary cold, but the foot soak time should not be too long, foot soak water temperature should not be too high in order to avoid scalding. However, it should be noted that salt water foot soak can not tonic kidney, such as the symptoms of kidney deficiency, foot soak alone is not a complete cure. If you want to solve the problem of kidney deficiency, you should be divided into kidney yin deficiency and kidney yang deficiency to be treated with medication, such as kidney yin deficiency to take six flavors of dihuang pills, kidney yang deficiency to take jin gui ren qi pills and so on, in order to get a better treatment effect. It should be noted that, if the symptoms of kidney deficiency, you should consult a doctor in time, and the use of traditional Chinese medicine need to be guided by a traditional Chinese medicine practitioner, can not be used without authorization.