Fuente: Wipo "BigData" The invention discloses a guarantee product recommendation system and method based on big data, relates to the technical field of big data analysis, and realizes refined management of doctor-seeing data by finely dividing hospital departments, constructing a department doctor-seeing fluctuation analysis set and combining quarterly division of years. And extracting fluctuation data of a target year and a target quarter, predicting the number of patients in combination with the current year, and accurately predicting the number of patients in each quarter by means of a time sequence prediction model. And screening out a recommendation department with the most doctor seeing number, analyzing age data of the recommendation department to construct a distribution diagram, and determining an age interval with the most proportion as a guarantee product recommendation object. According to the method, department business interference is avoided, the change rule of the number of patients is clearly presented, the prediction accuracy of the number of patients is improved, the promotion of guarantee products is more targeted, efficient connection of medical resources and the guarantee products is realized, and the overall efficiency of medical guarantee services is improved.