Objective To explore the influence of heart-shaped cosmetic suture and skin modified suture on scar and aesthetic degree of postpartum abdominal wall incision. Methods Puerperae with cesarean section admitted from September 2021 to September 2023 were selected as the research subjects. According to the random number table method， the patients were classified into group A and group B， with 75 cases in each group. Group A received heart-shaped cosmetic suture， while group B was given skin modified suture. The surgery-related indicators of puerperae were recorded. The differences in postoperative incision pain ［visual analogue score （VAS）］ and healing were compared between the two groups of patients. The differences in scar status ［patient and observer scar assess-mentscale （POSAS）， scar hyperplasia rate， scar width， the thinnest scar thickness］ and incision aesthetic degree at 6 months after surgery were compared， and the complications were recorded. Results The suture time and incision healing time in group A were significantly shorter than those in group B （P< 0.05）. At 7 and 30 days after surgery， the VAS score in group A was lower than that in group B， and the incision healing grading was better than that in group B （P<0.05）. The POSAS scores， scar hyperplasia rate， scar width and the thinnest scar thickness in group A at 6 months after surgery were significantly lower than those in group B （P<0.05）， and the effective rate of aesthetic degree was significantly higher than that in group B （P<0.05）. The incidence rates of postoperative complications in group A were significantly lower compared to group B （P<0.05）. Conclusion Heart-shaped cosmetic suture during cesarean section is helpful for postoperative incision healing， and can effectively reduce incision scar formation with a high cosmetic effect.

Cesarean section, Heart-shaped cosmetic suture, Skin modified suture, Scar, Aesthetic degree