In-patient service is a crucial link in the whole medical chain, how to construct an economical and efficient inpatient service model, so as to let patients spend the least amount of money, get the best quality medical service, and effectively improve their sense of well-being and sense of acquisition is a social problem that needs to be solved urgently. From the perspective of economics and combined with practical experience, a new inpatient service model (pre-hospitalization and pre-discharge model) is constructed, which is an upgrading and transformation of the original model on the basis of the existing business system, simplifies the existing service process of hospitalization and discharge, effectively reduces the average hospitalization day and the subperiod average hospitalization cost, and significantly improves the evaluation indexes of inpatient service compared with the traditional inpatient service model.