There are many reasons for men’s leg sweating, which may be physiological or pathological, such as urinary, reproductive, endocrine system disorders, hyperthyroidism, menopause, hyperhidrosis and so on. 1. Physiological reasons: compared to girls, the boys’ metabolism is more vigorous, the body’s heat production will increase, sweating will increase accordingly, especially in hot weather, such phenomena will be more obvious. 2. Pathological causes (1) Disorders of the urinary, reproductive and endocrine systems: when the urinary, reproductive and endocrine systems are disordered, there will be sweating during the daytime or excessive sweating at night after a little activity. (2) Hyperthyroidism: Excessive sweating often occurs when the thyroid gland is hyperfunctional. (3) Menopause: During menopause, some men also sweat frequently. (4) Hyperhidrosis: When the sympathetic nerves are excited, this can lead to excessive sweating. There may be other reasons that cause men’s legs to sweat, if the body appears to sweat for a long time, it is recommended that the hospital to improve the relevant examination, to clarify the cause of the disease after targeted treatment.