When a girl has her period, her body is in a state of vulnerability to infection, so she needs to pay special attention to hygiene, rest, reasonable diet and emotional regulation to keep her body in a healthy state and avoid various infectious diseases. The precautions usually include the following aspects: 1. Pay attention to hygiene: pay attention to pubic hygiene, wear soft, breathable underwear, and wash and change them regularly, use safe quality, soft and comfortable sanitary napkins, and pay attention to timely replacement to help prevent infection. In addition, during menstruation should not take a bath, vaginal douche, avoid sex, menstrual intercourse easy to cause infection, may also aggravate menstrual discomfort, so that girls lower abdominal cramps, pain and other symptoms more obvious and lasting; 2, pay attention to rest: during menstruation should avoid too much physical labor, so as not to accelerate the endometrial shedding, resulting in increased menstruation and other adverse effects; 3, reasonable diet: during menstruation should strengthen nutrition, more food Lean meat, milk, cereals, fresh vegetables and other nutrient-rich foods are good for improving resistance. It is not advisable to eat cold food, such as ice cream, cold drinks, etc., as well as spicy and stimulating food, such as chili, alcohol, etc. Such food may stimulate the gastrointestinal tract, causing abdominal pain, diarrhea and other symptoms, aggravating menstrual discomfort; 4, regulate emotions: keep a relaxed mood, avoid anxiety, tension, depression and other bad emotions, bad emotions may lead to endocrine disorders, easy to affect menstruation, resulting in menstrual disorders; 5. Other: gynecological checkups and tooth extraction should be avoided during menstruation, because the coagulation function is poor during menstruation and teeth extraction is easy to bleed, while the immunity of the body decreases during menstruation, which may increase the risk of oral infections, etc.