Staff development is a conscious effort intended to strengthen the library’s function in providing the growth of its own human resources. The library is responsible in offering learning opportunities based on the needs and interest for its staff members. These activities should be organized according to the job relatedness and personnel potential. So the purpose of this paper is to introduce some basic concepts, related theories, and procedures of implementations of staff development. Questionnaires concerning the current situations of staff development in Taiwan will be provided in this paper to demonstrate the importance of staff development as a starting point in the infrastructure.