The causes of night sweating in a 50-year-old man include physical weakness and emotional disorders. Night sweating mainly manifests itself as sweating during sleep at night, which may even soak clothing and bed sheets, and usually stops after waking up. 1. Physical weakness: congenital physical weakness, overwork and prolonged illness, etc. consume yin and blood, resulting in insufficient yin and yin deficiency to generate internal heat, resulting in abnormal sweat excretion, which is manifested as night sweating. 2. Emotional disorders: long-term emotional depression, too much thought, depletion of heart and blood, resulting in deficiency of yin, leading to deficiency of yin, resulting in internal heat (deficiency of yin in the body leading to the production of fire and heat), resulting in abnormal excretion of sweat, resulting in night sweats. If you have any discomfort symptoms, you need to go to the hospital as soon as possible, by the doctor according to the specific conditions, to formulate individualized diagnosis and treatment plan, so as not to delay the condition.