BACKGROUND WeChat groups, a core feature of WeChat, have evolved into a significant platform for online collective interaction, particularly in the medical field. Hospitals increasingly utilize WeChat groups for chronic disease management (e.g., diabetes, hypertension) and medical knowledge dissemination (e.g., pregnancy care, epidemiology). OBJECTIVE to explore the online dialogue underlying patterns in WeChat group pediatric consultations in China in reference and by contrast to ideal sequence structure often employed in offline medical conversations, (2) to identify characteristics and roles of WeChat Group Consultations. METHODS We conducted an exploratory study based on the corpus built from the doctor-consultant conversations from a WeChat group set up by a pediatric hospital in Chengdu with a combination of methods of frequency statistics by means of corpus-driven research and evidence-based analysis., institutional conversation analysis, and content analysis. RESULTS The findings indicate that there are mainly 4 sequences in WeChat Group Pediatric Consultations: problem initiation, data collection, diagnosis and treatment recommendation, conclusion. Unlike offline settings dominated by physicians, consultants are in a dominant position in initiating the conversation and determining the end of the conversation in WeChat Group Pediatric Consultations, which empowers them to articulate needs comprehensively while alleviating their anxiety through real-time medically professional guidance. CONCLUSIONS WeChat consultations serve as a supplementary "assistant" for urgent yet preliminary medical advice, bridging gaps until in-person hospital visits. However, reliance on temporary diagnoses underscores the need for balanced health literacy. These findings highlight the transformative potential of digital platforms in democratizing medical communication while emphasizing the irreplaceable role of offline diagnostics.