Objective To obtain the status of exclusive breastfeeding under 4 months of puerperal women in community in Beijing,evaluate the effect of follow-up intervention on increasing the rate of exclusive breastfeeding. Methods A randomized controlled trial was used to select 155 pregnant women,who were divided into intervention group and control group.Brochures and phone messages were provided to the intervention group from late pregnancy to 4 months after delivery as a method of intervention,whereas the control group received nothing in intervention.The status of exclusive breast-feeding and the knowledge about it were evaluated at different times after delivery. Results After the intervention,the average scores of the exclusive breastfeeding knowledge of the intervention group and the control group were increased by 35.41% and 32.00% respectively,there was significant difference between the scores of two groups(t=3.95,P＜0.001).The exclusive breastfeeding rate in intervention group was 54.7% at two months after delivery,10.9% higher than that of the control group.The exclusive breastfeeding rate in intervention group was 57.1% at four months after delivery,12.7% higher than that of the control group. Conclusion Intervention measures can increase the exclusive breastfeeding rate under 4 months to a certain degree,which can provide reference for a wide range of intervention on exclusive breastfeeding in urban communities henceforth.