Reasonable intra-hospital hierarchical diagnosis and treatment system will effectively guide the patients to see a doctor on demand and improve the efficiency of medical services. Beijing Tongren Hospital, Capital Medical University, has explored the intra-hospital hierarchical diagnosis and treatment system depending on different situatioins such as for new patients, subsequent visit patient, and the same patients with different clinical stage. Through establishing a series of intra-hospital hierarchical diagnosis and treatment modes, such as the well-known expert team, the outpatient service for specialized diseases, the multidisciplinary outpatient service for complex diseases, the nursing service, and the pharmaceutical care service, the outpatients could be oriented by specialties and disciplines and graded by the complexity in diagnosis and treatment of diseases. Relying on the appointment methods such as referral and revisit to open up the information channel, it can optimize the time cost and economic cost of patients, reflect the functional positioning of the tertiary hospitals, and improve patients′ sense of medical access and happiness.