Abstract: Objective　To explore the clinical application of Yan tension-free suture in skin incision of cesarean section. Methods　From July 2021 to October 2021, 29 qualified pregnant women who underwent two or multiple cesarean sections were selected. All of them were treated with Yan tension-free suture to close the wound margin. Regular follow-up was performed after operation and the scar hyperplasia was evaluated and compared with that before operation. Results　All incisions were healed in 29 cases, and the scar healed in a linear manner. Conclusion　Yan tension-free suture can achieve precise anastomosis and tension-free suture by reasonable trimming and anchoring dermis twice. It has remarkable effect in controlling scar hyperplasia and is worth popularizing.

Key words: Yan tension-free suture, 　Cesarean section, 　Scar