摘要Objective: To investigate the incidence of neonatal birth defects in assisted reproductive technology (ART) by in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI). Methods: The clinical data of 4229 cases of singleton deliver by infertile patients under 35 years old who received IVF/ICSI-ET in our center were analyzed. According to different fertilization methods, they were divided into IVF group (2967 cases) and ICSI group (1262 cases). The general situation of birth, birth defects and the location of defects were compared between the two groups. Results: a total of 38 cases of neonatal birth defects were found, the incidence of birth defects was 0.89％, including 30 cases (1.01％) in IVF group and 8 cases (0.64％) in ICSI group. There was no significant difference in the incidence of birth defects between the two groups (P > 0.05). There was also no significant difference in birth weight, gestational age and gender ratio between the two groups (P > 0.05). Conclusion: Different fertilization methods in assisted reproductive technology do not increase the incidence of neonatal birth defects.