Sweating in the armpits may be caused by personal constitution, poor ventilation in the armpits, and disease factors. 1. Individual constitution: genetic factors lead to congenital abundant sweat glands, there are abundant sweat glands in the armpit area which are responsible for the excretion of sweat, and there will be the situation of sweaty armpits. 2. Inadequate ventilation in the armpits: the human body has more sweat glands in the armpits, and factors such as exercise, high temperature environment, spicy diet and other factors lead to increased body temperature, and the armpits are in a closed state and cannot be ventilated in a timely manner to dissipate the heat, resulting in the situation of sweaty armpits. 3. Disease factors: hyperthyroidism, endocrine disorders and other diseases, resulting in the body’s metabolism, prompting excessive secretion of sweat glands in the armpits, armpit sweating. If you consider the disease factors caused by sweat, you need to consult a doctor in time for targeted treatment. At the same time, daily attention to maintain a calm mood, try to wear cotton breathable cool clothing.