Objective To provide reference for service optimization of information suppliers and doctors through analyzing the residents′ value cognition and utilization of online health information. Methods Questionnaires were distributed in June 2016 to 1 460 residents aged 18 or above and having experienced medical themselves or accompanying others in one year. They were surveyed to learn their health information cognition and utilization behavior. The data so acquired were subject to constituent ratio and Chi square test analysis. Results In terms of their use of online health information, 58.5% of the respondents would consult relevant information before medical visits, 64.3% would verify the doctor′s diagnosis online following such visits. In case of any inconsistences, 28.2% of them would seek second opinion at another hospital. Statistical differences were discovered in the cognitive difference of residents of different sexes on internet health information inquiry can relieve tension , and in the utilization difference of residents of different ages and educational on whether to consult online health information before medical visits (P<0.05). Conclusions The residents′ value cognition of online health information is rational in general, but there are also some cognitive behaviors worthy of notice. Information conflicts may incur doctor-patient conflicts and repetitive medical visits. Stakeholders should ensure the professionalism and quality of the information providers. The doctors should master the communication skills and pay attention to the potential impact of online health information. Key words: Information services; Online health information; Value cognition; Information utilization; Doctor-patient relationship