The possible causes of scar itch left by cesarean section are scar growth, scar hyperplasia, local inflammatory reaction, etc. Patients should avoid excessive scratching to prevent wound dehiscence and local lesions. 1. scar growth: after 1-2 months after cesarean section, the scar has been initially formed, but the muscle tissue is still continuing to repair, which may stimulate the peripheral nerves around the area to some extent and cause itching The sensation of itching; 2. scar hyperplasia: after the scar is fully formed, when it encounters the stimulation of weather factors such as cloudy, rainy, muggy, etc., itching may continue to occur at the scar because of hyperplasia and nerve sensitivity. Generally, no special treatment is needed. During the scar formation period, patients need to pay attention to hygiene, strictly abstain from spicy and stimulating foods, and can apply medication to reduce itching. After the scar growth is complete, excessive scratching needs to be prevented to avoid secondary infection. 3. Local inflammatory reaction: Inflammation of the scar infection can also cause itching, and the local area can be accompanied by obvious itching, redness, pain, and even odor. It is usually due to poor hygiene conditions and the presence of bacterial and fungal infections. Patients need to promptly clarify the infectious agent and actively treat it accordingly. It is recommended to take treatment by oral and local application of anti-inflammatory drugs under the guidance of a doctor.