The causes of hairy chest and stomach include genetic factors, increased androgen, polycystic ovary syndrome, etc. Treatment includes medication and surgery. 1. Genetic factors: If you are born with chest and stomach hairy, there is no need for special treatment. 2. Increased androgen: If the hairiness is caused by increased androgen due to various factors, anti-androgen treatment such as finasteride tablets can be given. 3. Polycystic ovary syndrome: If the patient is polycystic ovary syndrome, need to take short-acting compound oral contraceptive pills, estrogen and progesterone, spironolactone and other drugs, if necessary, can be given to the ovary perforation surgery and other surgical treatment. Finally, the phenomenon of chest hair and stomach hair, please go to the hospital in time to consult a doctor, the above drugs need to follow the doctor’s advice.