OBJECTIVE： To investigate the effects of WeChat platform online service on the safety of pediatric family medication and the quality of pharmaceutical care. METHODS： The online consultation records of “Qs and As for pediatric medications” were collected and summarized from the WeChat platform （WeChat ID： etyywd） during Jun. 1st， 2014-Dec. 31st， 2015 in our hospital. Statistical analysis was performed on the consulting time periods， age of pediatric patients with consultation demands， and the systems and mistake types involved in medication consultations. RESULTS： A total of 29 850 dialogue records on WeChat were collected， and 13 315 of these were related to medications （44.61％）. The peak time of medication consultation was at 9：00-10：00 in the morning， with an accumulative consultation number of 1 840 cases （13.82％）； while the least consultation time period was at 4：00-5：00 early in the morning， with only 13 cases （0.10％）. Pediatric patients in need of consultation were more within the age of 1-6 years old， and most of them were preschool children （31.20％） and toddlers （26.32％）. The systems consulted mainly involved the respiratory system， immune system and digestive system； in which respiratory system had the most cases （60.28％）. There were 1 508 Qs and As records for medication mistakes that were occured or may occure and were corrected in time （11.33％）， in which the mistake types were mainly the unsuitable use of antipyretics （3.91％）， antibiotics abuse （3.14％）， careless use of combination medication and excessive medication （3.04％）， excessively large or small doses （0.69％）， improper use of nebulized inhalant after discharge （0.41％）， and excessive use of vitamins （0.14％）. CONCLUSIONS： The WeChat platform expands the service scope of clinical pharmacists. As an extension of hospital pharmaceutical care， it reduces the risk of family medication mistakes due to a patient’s or members’wrong recognition to a certain degree， reinforces communication between doctors and patients， and improves the experience of medical services.