Congressional assistants play an important role in helping legislators deal with their legislative duties and political affairs. This study aims to explore and analyze the characteristics of congressional assistants' information-seeking behavior and context. Results of this study suggest that congressional assistants search for legislative information mainly in order to make thorough studies of issues related to bills under discussion and to provide prompt and satisfactory services for civilians. Specific needs in different contexts will influence congressional assistants' decision on information acquisition and adoption. In addition, the process of their legislative information-seeking is likely to be swayed by social or personal factors. The web site of the Parliamentary Library frequently serves as the first source of legislative information-seeking, though the searching methods applied by congressional assistants may vary from one person to another. Congressional assistants further seek specific information through various sources, judge the compatibility of the sought information, and select documents in oral or printed form to fit in with particular contexts.