Objective: To explore the application of shared care management platform in patients with gestational diabetes mellitus and the effect of health management intervention. Methods: A total of 90 patients admitted to the department of respiratory medicine of a class A tertiary hospital in Zhengzhou from February 2020 to January 2021 were included and were divided into the observation group and the control group according to the envelope method, with 45 patients in each group. The control group adopted routine follow-up management, while the observation group adopted shared care management platform. The intervention effect were evaluated by comparing fasting blood glucose（FBG）, 2-h postprandial blood glucose（2 hPG）, glycosylated hemoglobin. The knowledge of disease was assessed by diabetes knowledge questionnaire，and self-management ability was assessed by Self-management Ability Questionnaire for Gestational Diabetes Mellitus Patients(SMQGDM). Results:After intervention, the observation group showed lower mean levels of FBG, 2 hPG and glycosylated hemoglobin, and higher mean scores of related knowledge, and higher mean total score of SMQGDM compared with the control group（P<0.05）.Conclusion: The application of shared care management platform in patients with gestational diabetes is conductive to improving the related knowledge, glycemic control and self-management ability.