Objective To explore the effects of childbirth rehearsal combined with 3D technology on the delivery of primiparas. Methods A total of 200 primiparas going for prenatal checkups in outpatient department were divided into a control group and an experimental group chronologically, with 100 cases in each group. The control group received routine prenatal education, while the experimental group additionally received the prenatal education on signs of labor, hospitalization process and natural delivery through childbirth rehearsal combined with 3D technology at 32 weeks gestation. The childbirth fear, birth self-efficacy, willingness of delivery mode and the real delivery mode between the two groups were compared. Results After the education, the score of childbirth fear and birth self-efficacy of the experimental group were significantly better than those of the control group（P＜0.01 for both）. The natural delivery willingness and the natural delivery rate of the experimental group were significantly higher than those of the control group（P＜0.01 for both）. Conclusion The prenatal education for primiparas through childbirth rehearsal combined with 3D technology, can reduce their childbirth fear, enhance their birth self-efficacy, then increase the natural delivery willingness and decrease the rate of cesarean section.