Abstract:Objective：To explore the promotion of Internet information technology to out-patient services，and deeply analyze the effect of implementation of the “One card system” on outpatient services. Methods：Questionnaires survey was used to collect data，and data was analyzed by SPSS software. Results：Self-help registration（t=12.318，P < 0.001），self-service recharge（t=12.318，P < 0.001）and inter-consultation payment（t=12.318，P < 0.001）saved more time than traditional methods for patients，and the difference was statistically significant. There was a higher satisfactory degree in the patients. Conclusion：The “One card system”service not only needs the transformation and on-line of information system，but also needs to be in line with coming and optimizing the outpatient service process. At the same time，it should continue to improve the platform and improve the patients’ experience of going to doctors according to their using habits and requirements towards functions.