The paper analyzes problems in the application of Electronic Medical Records(EMR) in Zhongshan City People's Hospital and the application level. By using the Methods and Standards for Graded Assessment of the Application of Electronic Medical Records System Functions and integrating with actual operating data in the hospital, it conducts graded assessment of the EMR system functions one by one. To upgrade the EMR system in accordance with the standards can improve its scientific, reasonable and appropriate application and facilitate sustainable development of hospital informatization development.