This paper focuses on how to apply new technologies and computing intelligence in interaction with medical science in order to advance customer care, targeting on prognosis and treatment. With the help of AI, large amounts of data can be analyzed to identify new patterns, which will allow for correct and timely actions. Detailing about principles of precision health, place of big data, and ethics, it presents the future visions and examples of the application of AI in diagnosing, avoiding, and curing illnesses. Further, it aims to discuss the issues and prospects of integrating AI into health care, proper interaction of all healthcare branches, and strict data management.