The invention provides a sepsis early-warning method and system based on medical data, and a computer storage medium. The sepsis early-warning method based on medical data includes the steps: obtaining original medical diagnosis and treatment data; combing the original medical diagnosis and treatment data by using a standard data template, automatically extracting the data matching the standard data template in the original medical diagnosis and treatment data to obtain standard medical diagnosis and treatment data, extracting standard diagnosis and treatment data related to sepsis in real time from the standard medical diagnosis and treatment data according to predetermined rules, and obtaining first medical index data through calculation; determining whether the first medical index datais within an abnormal range according to the first medical index data and the first preset reference index; and when the first medical index data is in the abnormal range, sending the first early-warning information. According to the sepsis early-warning method and system based on medical data, and the computer storage medium, standardized medical data is provided to ensure the authenticity and traceability of medical data, and to realize the process supervision of the clinical diagnosis and treatment path of sepsis.