The first night, refers to the beginning of the night or the first night of a new marriage. How to have a good first night is every will be married men and women are concerned about the issue. The first night is not careful, it is likely to cause “blood”, the future sex life between the couple, the relationship between the couple also has a great impact. Here is a case for you: the patient, a certain female, 16 years old, is a school student. After the first intercourse on the night of May 17, 2014, the patient felt a tearing pain in her perineum, the pain was severe and unbearable and accompanied by vaginal bleeding, the bleeding gradually increased, the blood was bright red and wet through a sanitary napkin for half an hour, and the bleeding did not stop for 2 hours. She came to our hospital with the following symptoms: heavy vaginal bleeding, pale face, cold extremities, dizziness, fatigue, no nausea or vomiting, no abdominal distension or pain, normal bowel movements. The patient was physically fit, had regular menstruation, her menstrual period started at the age of 12, with a cycle of 28-30 days, lasting 5-6 days, medium volume, bright red color, no clots, slight dysmenorrhea, G0P0. Specialized examination: normal vulvar development, vaginal unobstructed, large amount of blood stains, perineal laceration of degree II-III. Auxiliary examination: blood count: Hb 50g/L. Diagnosis: 1. perineal laceration of degree II 2. severe anemia. Treatment was given to debridement and suturing, and postoperative symptomatic treatment such as anti-inflammatory and pain relief, blood volume supplementation, etc. After treatment, the symptoms were relieved and the patient was discharged. The first night is originally beautiful, but due to carelessness caused the patient physiological injury, but also caused a lot of damage to the patient’s psychological. The first night is every will be married men and women will have, many men and women first night panic, because they know very little about sex and disease, the following is to introduce the first night precautions, I hope to provide the necessary help to the majority of friends. First night precautions: 1, mutual consideration: the first time sex, both sides will have a sense of shyness, especially the female more obvious, the psychological state is more complex, the spirit of some tension. At this time, the male gentleness is very important, to gradually ease the female nervousness, so as not to “disagree”. 2, both sides to maintain a relaxed and happy state of mind, do not be affected by the daily chores and small arguments, to bring bad emotions to bed, which not only affects the mood of the first night, but also leaves a shadow in the future. 3, do not have high sexual expectations, when a person always pay attention to their sexual ability, there is bound to be a strong sense of expectation, because it is the first time so often the higher the expectations the greater the disappointment. Therefore, everything should be natural, the cultivation of feelings between the two is the most important, love to the thick, love can not help, naturally can appreciate the endless pleasure. 4, pay attention to the sexual hygiene: before sexual intercourse, both men and women should pay attention to the cleanliness of the sexual organs. Men should clean the penis, scrotum, remove the dirt in the skin folds. Women’s vulva and the anus is close, vulnerable to pollution, and sweat glands, sebaceous glands are rich, more secretions, but also to thoroughly clean. 5, pay attention to hymen inflammation: after the first sexual intercourse, hymen rupture, some slight pain and a small amount of bleeding, you should use sterilized gauze or cotton wool to wipe, it is best to intercourse 2-3 days, to prevent wound inflammation. If the hymen rupture bleeds a lot and the pain is unbearable, you should seek medical attention. 6. The hymen will be cracked or stretched during the first sex. If it is cracked, vaginal bleeding will occur, but some people will not. If you do not bleed, do not allow others to accuse you of not being a virgin. A virgin is someone who has not experienced sex like penetration, not someone who has an unbroken hymen. PS1: the first night to reduce female pain solutions 1, spend more time in the kiss, hug and caress that “foreplay”, to the woman fully wet before penetration; 2, if still dry, use lubricant or saliva, will be easier to carry out; 3, the woman timely to tell him the feeling, the man as gently as possible to move, the amplitude can be smaller; 4, the woman to tell him the feeling, the man as gentle as possible. The amplitude can be smaller; 4, change the position, for example, front and back side by side or the woman in the upper position, will be improved; 5, if the pain remains, or often bleeding after sex, should go to the doctor to prevent complications such as perineal tears. PS2: not every virgin bleeding or pain during first intercourse, the reason for such several reasons: 1, the characteristics of the hymen vary from person to person, there are thin, thick, loose, tight, large, small, the shape also varies, some due to strenuous exercise, cycling, bruises and trauma, put menstrual plugs, masturbation and other reasons and rupture; 2, older hymen has receded on its own or not very obvious at birth, so easy to penetrate without bleeding 3. some hymens are very stretchy and remain intact despite multiple sexual intercourse.