Objective To construct an Internet based counseling service project for maternal and infant health, and to explore the implementation effect. Methods Based on the "Shanghai Health Cloud Platform", online counseling services were provided for postpartum women after discharge. Results From December 2019 to February 2021,167 postpartum women utilized the online service. The platform run well, with the average consultations being 1.95 times per person per day. The scores of perceived usefulness and convenience were 4.65±0.64 and 4.59±0.76 respectively among 46 users who were selected to report their use experience, and the overall satisfaction score was 4.59±0.72. Conclusion The Internet based counseling service project for maternal and infant health can provide professional, timely and targeted online advices for postpartum women, thus to meet their needs in the postpartum period at home.