中文摘要：

现在越来越多的人通过网络获取科技信息。尤其是与公众日常生活有着密切关系的医疗健康方面的信息。但由于网络信息质量参差不齐。影响到公众对网络的信任，也严霞影响用户决策行为。为此，本文重点选择微博中转发量较大的一些医疗健康领域信息为案例。通过问卷调研、统计分析、专家访谈、对比分析等方法对网络科技信息传播中的信息质量问题进行研究。得出结论如下：微博信息质量不佳主要是由于其灰色信息的属性、缺乏相关研究关注以及没有完善的制度法规约束。鉴于此。提出以下建议：（1）重视医疗健康领域微博信息质量问题；（2）完善网络信息发布及管理机制；（3）加强理论研究，构建医疗健康信息质量评价标准和指标。建立健全科学合理的信息质量评价体系。

英文摘要：

At the present, more and more people acquire scientific and technological information through the Internet, especially medical information that is closely related to people＇s daily life. However, the quality of the information is various; the fact affects public confidence and has seriously impact on users decision-making behaviors. To this end, the microblogging in health and medical field that have been widely forwarded is taken as a case, by using questionnaire survey, statistical analysis, expert interviews, comparative analysis, and other methods, the quality of disseminating information on network science and technology has been studied and the conclusions are drawn as follows： The poor quality of microblogging information is mainly caused by its properties of gray information, lack of research attention, and there is no sound system for regulatory constraints. In this context, the advices are proposed as below： （1） emphasizing on the quality of mieroblogging information in the field of medical and health; （2） improving the mechanisms for network information dissemination and management; （3） strengthening the theoretical research, developing evaluation criteria and indicators for the quality of medical and health information, and establishing a sound scientific and reasonable system for information quality evaluation.