Whether or not stitches need to be removed after surgery is determined by the stitches that are being used at that time. If they are absorbable stitches they do not need to be removed, if they are non-absorbable stitches they will need to be removed. Absorbable threads are prepared from healthy mammalian collagen, or synthetic polymers. These threads can be absorbed and degraded by the body’s tissues after being sewn into the body. Therefore, if absorbable sutures are used during surgery, they do not need to be removed. Non-absorbable threads can be categorized as silk threads and Priline threads. They can not be absorbed by human tissue. If non-absorbable sutures are used during surgery, they need to be removed. After the surgical incision is closed, try not to touch water, pay attention to local cleanliness, and do not do too strenuous exercise. If the incision has pus, redness, swelling, fever and other uncomfortable symptoms, it may be infected, and you should consult a doctor as soon as possible to avoid delaying your condition.