First, repeated scraping is mostly seen in unmarried first pregnancy and blind pursuit of eugenics. In layman’s terms, after the combination of sperm and egg, the pregnant egg is like a seed, planted in fertile soil in order to germinate and bear fruit. Repeated abortions or excessive scraping of the uterus can cause damage to the uterine lining, making the original fertile soil barren. In the future, even if there is a desire to procreate, the seed is good, but it is difficult to get pregnant. In order to avoid the harm caused by repeated scraping, it is recommended that women of childbearing age, once contraception fails, it is best to take the remedy of emergency contraceptive pills within 24 hours. If an unplanned pregnancy occurs, you should also choose to go to a regular hospital to do abortion surgery, the operation time to choose in about 45 days of pregnancy is appropriate. Some people think that the earlier you have an abortion, the better. Too early to do abortion, due to the sac embryo is too small, easy to cause excessive scraping. Second, the menstrual period coitus anxious to give birth to the newlyweds, because of frequent coitus, even if the menstrual period is not bad, the result is counterproductive. Because menstrual intercourse can cause infection of the uterine cavity, stimulate women to produce sperm antibodies, at the same time, can also cause menstrual blood reflux, resulting in endometriosis, and all these situations can lead to infertility. Regarding the time of coitus, gynecologists suggest that young couples preparing for childbearing should preferably choose to have coitus in the middle days of two periods, i.e., close to the ovulation period. This is because the fallopian tubes, which are located deep inside the female pelvis, are like curved magpie bridges where sperm and eggs meet and combine. Since the sperm has a life span of 48 hours and the egg has a life span of 24 hours, it is necessary for the sperm to arrive first and wait for the egg to arrive late. Therefore, if you want to improve the chances of pregnancy, it is best to let the sperm wait for the egg in the fallopian tube. Thirdly, mental tension The patient’s desire to seek children is too strong, so that the neuroendocrine disorders, manifested in excessive anxiety, tension, depression, worry, medical science called this phenomenon for psychogenic infertility. The reason for this is that some women with ovulation disorders caused by mental tension get pregnant soon after they have a child, which means that once this part of the woman relaxes mentally, she will regain her fertility. Experts believe that, from this point of view, mental relaxation is very important to fertility. However, from a medical point of view, the fat in a woman’s body can only maintain a normal menstrual cycle when it reaches more than 20% of her body weight. If the fat is too little, it can lead to abnormal secretion of hormones in the hypothalamus and pituitary gland, resulting in ovulation disorders, reduced menstruation and even amenorrhea. Some people pursue slimness, so that people are as thin as a bone. This patient treatment is more troublesome, even after weight recovery, endocrine is difficult to return to normal, and may even lead to lifelong infertility. Fifth, fast food fast food There is a widespread phenomenon of eating a variety of meat, nutrients, foreign fast food too much, resulting in the creation of many fat girls. Because some animal feed contains steroid additives, girls eat too much of this meat food, will lead to high levels of androgens in the body, obesity, scanty menstruation, acne and other disorders, medically known as pubertal hypertestosteronemia. If this disease continues to reproductive age, can develop into polyovarian syndrome, and lead to infertility, treatment is also very tricky. Sixth, some patients indiscriminately seek medical treatment Some patients were not serious, after appropriate treatment can be pregnant, but because of improper treatment, but caused lifelong regrets. For example, patients with mild salpingitis, normal anti-inflammatory can solve the problem, but the private clinic treatment, the patient in a short period of time to do a number of tubal fluids. The infection was aggravated by repeated uterine operations, which eventually caused complete blockage of the fallopian tubes. Therefore, it is recommended that infertility patients must go to a regular hospital to seek medical treatment.