：公众科学项目包含项目发起方（科学家、政府机构等）和项目参与方（志愿者）两类群体，其有效合作是项目顺利实施的关键。当前的研究将焦点集中在公众参与意愿方面，却忽视了合作的重要前提--信任。文章基于信任建立模型，从声誉、网站质量、信息质量、制度结构因素四个方面，提出了志愿者对公众科学项目信任的主要影响因素。通过情景式问卷调研，对179份有效数据进行OLS回归。数据结果表明，科学家声誉、项目发起者声誉、网站易用性、信息公开性、信息交互性、以及公众隐私保障都会显著正向影响志愿者对公众科学项目的信任，网站有用性对志愿者信任不存在显著作用。

Citizen science projects are composed of two groups: project initiators (scientists, government agencies, etc.) and project participants (volunteers), whose effective cooperation is key to the effective implementation of projects. Current research focuses on the willingness of public participation, but ignores the prerequisite of cooperation-trust. Based on Trust Building Model, this study proposes main influence factors of volunteers' trust in citizen science projects from four aspects: reputation, website quality, information quality, and institutional structural factors. Through a scenario-based questionnaire, the authors conducted OLS regression on 179 valid data. Data results show that scientist reputation, project initiator reputation, website usability, information publicity, information interaction, and public privacy protection have significant positive impacts on volunteers' trust in citizen science projects, while ease of website use had no significant influence on volunteers' trust.