According to the Jiangsu Province Inpatient Medical Records Quality Evaluation Standard， combined with the status of medical records quality in a tertiary hospital， the PDCA cycle management is used to carry out medical records quality training. Through interviews and spot check of medical records， the problems in the quality of the hospital's medical records were obtained. The PDCA cycle management mode was adopted to carry out three medical records quality trainings: special training for the severe defects， special training for the major deductions， and special training for the medical records of the critically ill patients. The Chi?square test was used to examine the effect of the three trainings， which proved that the result was statistically significant. The article provides reference for hospitals to improve the quality of medical records writing and strengthen the medical records quality management.