The ChatGPT (Chat Generative Pretrained Transformer), an AI-based chatbot, has garnered significant attention in healthcare. We methodically extracted two significant English databases (PubMed and Web of Science) to examine the current state of research and potential future directions for ChatGPT in the healthcare field. Following screening, 921 publications were included in the analysis, demonstrating a sharp rise in the previous year and a peak number of publications released in October 2023. Meanwhile, we obtained 88 items and categorized them into 10 clusters, of which artificial intelligence, ChatGPT, and humans ranked among the top three in terms of frequency.