In April 2021, the General Office of the State Council issued the "Guiding Opinions on Establishing and Improving the Outpatient Coordination Mechanism for Basic Medical Insurance for Employees" to further improve the basic medical insurance system for employees with mutual assistance and shared responsibility. Taking the reform of Jining in Shandong Province as an example, this paper summarizes the experience, achievements, problems and prospects of outpatient coordination guarantee mechanism of basic medical insurance for employees, and provides reference for promoting the mechanism reform.