The common causes of blisters at the wound after surgical stitches include allergy, infection and so on. 1. There are blisters caused by allergy to gauze or medical tape, at this time, you need to immediately replace the gauze or medical tape, you can use the adhesive tape suitable for sensitive skin, to reduce the stimulation of the skin, and at the same time, local disinfection, to keep the local clean and dry, how to slowly alleviate. 2. Wound infection can also lead to some tiny blisters around the suture line, this situation will have pus secretion, if the condition is relatively mild, change the medicine in a timely manner, and pay attention to the disinfection of the wound, the serious ones should be based on the specific conditions of the wound, to take appropriate measures, and if necessary, to give antibiotic treatment. A few patients’ body is more sensitive, long-term tension at the wound will cause blisters around the wound. Blisters in this case will not have pus, redness, swelling, pain and other symptoms, and will not break the mouth, blisters transparent, different sizes, at this time to keep the wound hygiene and dryness, and regular change of medicine can be. Regardless of the cause of the blisters, once found to be timely treatment, if necessary, as soon as possible to send to the doctor, if there are related allergies to the doctor to explain the history of allergies and other circumstances, so as not to delay the condition.