As we all know, the endocrine hormones of the body will undergo some changes during menstruation, and the various systems of the body will also undergo some subtle changes accordingly, such as emotional agitation, increase in blood vessel brittleness, and a decrease in the body’s resistance as well as immunity. If the surgery is performed during menstruation, it will seriously affect the postoperative recovery and may increase the chance of infection. On the other hand, during menstruation, the body’s blood clotting time is abnormal, and surgery during this special period will increase the amount of bleeding during the operation as well as increase the possibility of postoperative hematoma, prolonging the recovery time, and more likely to increase the occurrence of some postoperative complications. Therefore, plastic surgery is best avoided during menstruation and the three days before and after menstruation for surgery. Blood characteristics during menstruation 1, the normal human body exists with the role of coagulation of fibrinase and fibrinolysis of fibrinolytic enzymes, these two substances to maintain a balance, the blood in the body to normal circulation. However, during menstruation, this balance is broken, fibrinolytic enzymes are activated, and the blood in the body will be in a state that is not easily coagulated. Normal menstrual blood in women is not easily coagulated. 2, blood vessel brittleness enhancement As the blood is not easily coagulated, once there is a blood vessel rupture, even if it is a small blood vessel rupture, it may lead to serious consequences. If there is more than one bleeding or a hematoma is formed because of bleeding from the wound, the recovery time will be prolonged. In addition, if the hematoma localization becomes a base for bacterial reproduction, it will also cause infection. 3, immunity decline During menstruation, due to endocrine imbalance, the body’s resistance to viruses is significantly lower than usual, which will increase the chances of infection. If it is a more traumatic surgery, it will also prolong the recovery period, and it is easy to have postoperative complications. 4, easy to cause infection Due to the endocrine imbalance of women’s body during menstruation, it is more likely to have body fatigue, swelling and pain, mood fluctuations, and the body’s resistance to pathogenic bacteria is also significantly lower than normal, reluctantly during menstruation, not only is the psychological tolerance for surgery poor, but also poor resistance to infection, which can easily lead to serious infections. The best period for surgery Surgery around 5-10 days after menstruation will not only result in less intraoperative bleeding and clear vision, which is more convenient for the surgeon to operate, but will also increase the degree of cooperation and precision of the surgery, greatly improving the success rate of the surgery, and the chances of hematoma infection will be greatly reduced. Remember not to use drugs to control menstruation, and do not eat some blood-activating drugs before surgery, such as Colla Corii Asini, wolfberry, angelica and other drugs. Postoperative should also be appropriate to avoid food.