〔Abstract〕 Objective To investigate the evaluate value of high-frequency ultrasound combined with extended field of view (FOV) of transabdominal ultrasound in the early postpartum diastasis recti abdominis (DRA) . MethodsA total of 96 primiparas who delivered in Shenzhen Luohu District People's Hospital from September 2020 to March 2021 and underwent ultrasound review at 6-8 weeks after delivery were selected. According to the mode of delivery, they were divided into the natural labor group with 61 cases and the cesarean section group with 35 cases. The inter-rectus distance (IRD) was measured and compared at 3 cm above the umbilicus, 3 cm below the umbilicus and at rest by high-frequency ultrasound combined with transabdominal ultrasound FOV. Results The incidence of DRA in 96 primiparas was 53.13 %, 83.33 % and 2.08% at 3 cm above, above and below the umbilicus, respectively. In the resting state, the IRD of the two groups at 3 cm below the umbilicus was 2.30 (4.75) mm and 6.80 (7.50) mm, respectively, and the differences were statistically significant (P < 0.05). The IRD of the two groups were 15.20 (11.85) mm and 18.10 (7.80) mm at the 3 cm above the umbilicus, 1.00 (2.90) mm and 3.60 (4.10) mm at the 3 cm below the umbilicus, respectively, the differences were statistically significant (P < 0.05). Conclusion High-frequency ultrasound combined with transabdominal ultrasound FOV has a good application in the evaluation of early postpartum DRA in primiparas, which can conveniently and accurately evaluate DRA and provide a basis for postpartum rehabilitation intervention for women.