The invention discloses a hospital waiting number management method and system. A user logs in a hospital system through a mobile phone number or a Wechat account to select a sickness treatment department, views doctor information of the selected department, selects a treatment doctor and time, and obtains a waiting number; whether the user sees the doctor for the first time or not is judged, andif no, medical history of the user is retrieved; collected user information is compared with a intrasystem database to judge the credit rating of the user, if the credit rating is too low, the obtained waiting number is canceled; the system calculates the predicted waiting time of the user according to the number of people waiting ahead of the user and the historic records in the database; and thenumber of people waiting ahead of the user and the predicted waiting time information are sent to the user. The hospital waiting number management method and system calculates the predicted waiting time of the user for seeing the doctor in the hospital, and can correct the predicted waiting time of the user by combining the practical treatment time of current treatment patients, so that the predicted waiting number waiting time of the user can be more accurate, and the treatment experience of the user is improved accordingly.