The precautions before menstruation include the following: 1, keep the vulva clean: before the menstruation to do a good job of cleaning the vulva area, wash with warm water every day, avoid the tub, sitz bath, can choose the shower. Wear loose, breathable cotton clothing and underwear, and change them regularly to avoid the increase of secretions that cause bacterial proliferation and infection, and pay attention to the cleaning and disinfection of special basins and towels. You should choose hygienically qualified sanitary products, such as toilet paper, sanitary napkins, etc.; 2. Reasonable diet: Before menstruation, avoid eating too much cold, spicy and stimulating food, drink less cold drinks, eat a reasonable diet, eat more fresh fruits, vegetables, meat, eggs, etc. to achieve a balanced nutrition; 3. Lifestyle: It is recommended to work and rest regularly, ensure sufficient sleep, avoid staying up late and excessive physical labor, pay attention to warmth and reduce cold stimulation. Reduce cold stimulation to avoid discomfort such as dysmenorrhea; 4. Reduce the frequency of intercourse: the frequency of intercourse should be reduced before menstruation to avoid aggravating pelvic congestion, abdominal cramps, pain, infection, etc.