Proctology is a surgical department, most patients are treated through surgery to treat the disease, post-operative wound recovery is one of the keys to disease recovery, why the wound healing is slow, the following is for you to do the collation, I hope it will be useful to you. Reasons for slow wound healing after surgery 1, age: the older the age, the slower the wound healing. This is related to the elderly systemic factors. 2, nutrition: lack of protein, vitamins, trace elements, can not provide the required nutrition for tissue regeneration, will delay wound healing. Trace elements related to wound healing are copper and zinc, vitamins such as vitamin A, vitamin C and vitamin E. These substances are generally not deficient in the normal human body. However, the need for wound healing greatly exceeds the usual amount, which, together with the patient’s poor appetite and less food intake, can also cause an oversupply. It is quite important to enhance nutritional support after surgery. Especially for patients who can eat, they should eat a well-digested high protein and high calorie diet. 3.Infection: When the wound is infected, there is a lot of exudate, which can crack the wound that is healing or has been sutured, or cause the infection to spread and aggravate the injury. 4, local blood circulation: local blood circulation on the one hand to ensure the oxygen and nutrition needed for tissue regeneration, on the other hand, the absorption of necrotic material and control of local infection also play an important role. Therefore, it is necessary to promote blood circulation through appropriate amount of activities after surgery. 5, blood sugar: diabetic patients, with more sugar in the blood, along with vascular lesions, will affect the wound healing. Pre-operative and post-operative control of blood sugar will directly affect the degree of wound recovery. 6, smoking: the combination of carbon monoxide and hemoglobin in the blood circulation of smokers reduces the ability to transport oxygen, and nicotine will make the surrounding blood vessels contract, affecting wound healing. 7, psychological factors: psychological stress affects the function of the neuroendocrine immune system, slowing down wound healing. 8, postoperative complications: thrombosis, pneumonia, peritonitis, postoperative intestinal obstruction and other complications, have a direct impact on wound healing. 9, drugs: immunosuppressants, cytostatics, hormonal anticoagulants have a direct negative impact on the wound, which will inhibit cell proliferation and affect tissue repair. Some surgical healing matters normal healing time after anal surgery 1, hemorrhoids: under normal circumstances, hemorrhoid surgery generally takes 7 to 10 days after surgery before the affected area will begin to grow flesh, about 30 days to heal, different people’s physique also varies. 2, anal fissure: the recovery time after surgery depends on the patient’s physique, the surgery to take the way hanging wire, generally 1 to 2 weeks hanging wire will break on its own, followed by a change of medicine to promote wound healing, usually about a month will feel symptoms significantly better. A few people have not fallen off the line for two weeks and can only be removed by the doctor, which may prolong the recovery time. 3, anal fistula: can be divided into high anal fistula, low anal fistula and complex anal fistula, low anal fistula generally takes about 30 days to heal after surgery; and high complex anal fistula, the general repair time takes about 50 days. If during the recovery period, the patient is allergic to certain drugs, eczema and other symptoms, the healing of the trauma will be delayed. 4, perianal abscess: according to the patient’s own situation and the size of the abscess cavity, its recovery time is different, smaller abscesses may take one to two weeks to heal, while large abscesses will take about two to four weeks to heal. Generally speaking, a perianal abscess that has not healed for more than one month after surgery is considered poor healing.