After the use of circumcision anastomosis, the skin at the wound is a little hard how is it, may be the existence of newborn granulation tissue, may also be scar hyperplasia, infection and other factors. 1. Granulation tissue: in the process of wound recovery, there may be newborn granulation tissue, which will lead to itching at the wound site, which is a normal physiological manifestation and does not require special treatment. 2. Scar hyperplasia: after surgery, there is local damage, scar hyperplasia may occur during recovery, which will lead to local itchiness, usually no other clinical symptoms, may improve on its own. 3. Infection: Inadequate care after surgery may induce localized infection, which may lead to localized hardness due to the presence of infection. It may also be accompanied by itching, pain, redness, swelling and other symptoms. After the use of circumcision anastomosis, the skin at the wound is a little hard how is it, and the presence of other abnormal manifestations, it is recommended to seek medical examination and treatment to avoid adverse effects.