The following treatment measures can be used for the case of a seven-week-old girl with discharge in her underwear. The first step is to treat the urinary tract infection, because some girls have discharge in their underwear because they have a urinary tract infection. There are symptoms of urinary tract irritation such as frequent, urgent and painful urination, and the urine is very yellow in color. This situation can be treated with cephalosporin for anti-infection or with Chinese herbal medicine, which is based on the treatment of clearing heat and dampness. The next treatment is precocious puberty in children, because if a child has symptoms of precocious puberty at the age of seven weeks, it can also lead to discharge from the child’s underwear, and often accompanied by breast development and even vaginal bleeding. In this case, the child should be taken to the endocrinology department of the children’s hospital for testing of sex hormones and ovarian ultrasound. If precocious puberty is confirmed, the child should be treated accordingly.