Surgery is a surgical department and most patients are treated for their diseases through surgery. Postoperative wound recovery is one of the keys to disease recovery, and a wound with problems can prolong hospitalization and affect overall disease treatment. So what are the factors that affect wound healing? 1, age: the older the age, the slower the wound healing. 2.Nutrition: Lack of protein, vitamins and trace elements will delay wound healing if they cannot provide the nutrition needed for tissue regeneration. The 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, coupled with the patient’s poor appetite, eating less, will also cause an oversupply. 3, infection: When the wound is infected, there is a lot of exudate, which can cause the wound that is healing or the wound that has been sutured to crack, 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, the need to promote blood circulation through the appropriate amount of postoperative activities. 5, blood sugar: diabetic patients, the blood contains more sugar, accompanied by vascular lesions, will affect the wound healing. 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 constrict, which affects wound healing. 7, psychological factors: psychological stress affects the function of the neuroendocrine immune system, slowing down the wound healing. 8, postoperative complications: blood clots, pneumonia, peritonitis, postoperative intestinal obstruction and other complications, have a direct impact on wound healing. 9, drugs: immunosuppressants, cytostatic agents, hormonal anticoagulants have a direct negative impact on the wound, which will inhibit cell proliferation and affect tissue repair. Therefore, postoperative patients should keep the wound clean and dry; get off the ground early after surgery, move in moderation, avoid pulling or squeezing the wound; have a balanced diet, eat more fresh vegetables and fruits, avoid hairy and spicy stimulating food; avoid smoking and alcohol; actively treat and control underlying diseases, such as hypertension, diabetes, etc.; maintain a relaxed mood and good rest; and follow medical advice on medication. Once the wound becomes red, swollen and painful, the temperature rises or other physical discomfort, you should seek medical attention promptly.