Objective To analyze deficiencies of medical records from emergency observation room and explore effective procedures to enhance writing quality of medical records and its management. Methods One thousand two hundred medical records from emergency observation room during June to December 2015 were analyzed according principles of medical records writing,regulations for medical records management in medical institutions by Ministry of Health and regulation for medical records writing and management in Guangdong province. Results 998/1200 medical records were found with deficiency and the total deficiencies were 4478 items. The prominent four types of deficiencies, occupying 78.67%, included absence or incompleteness of the notification of the rights and obligations and power of attorney, simple copy and paste of the medical records, absence of medical test results and too simplicity of the recording of the disease process. Conclusion Prominent deficiencies were found in medical records from emergency observation room. The clinical physicians and hospital administrators should take effective procedures to improve and control the quality of the medical records.