pph surgery should be corrected to PPH surgery, perianal itching one month after surgery, may be related to the wound is not completely healed, anal eczema, hemorrhoids recurrence, granulation tissue growth and other conditions. 1. Wound not completely healed: If the incision appeared in the surgery is relatively large, coupled with the special anal area, if it is contaminated by feces and other contaminants, it may cause secondary infection, affecting the normal healing, the patient may have persistent liquid exudation, anal itching and other symptoms. 2. Anal eczema: if the site of persistent liquid outflow, may cause perianal eczema, patients will appear obvious itching feeling, the surrounding will be accompanied by small particles of the rash. 3. Hemorrhoid recurrence: If you do not pay attention to your diet after surgery, eat spicy and stimulating food, or keep a position immobile for a long time, it is very likely to lead to the recurrence of hemorrhoids. The manifestation is a meatball at the anal opening, accompanied by a sense of itching and pain and so on. 4. Granulation tissue growth: one month after the operation is still in the recovery stage, if there is granulation tissue is growing, it will stimulate the surrounding skin and mucous membrane, itching. If the above symptoms occur, it is best to consult a doctor for a clear diagnosis and actively cooperate with the doctor to avoid aggravation of the condition.