As the society has stepped into the era of knowledge economy, the implementation of scientific and effective knowledge management is of great realistic significance to the development of governmental organizations. Based on precedent theories of knowledge management capability, and referring to knowledge management practices of governmental organizations, a knowledge management capability evaluation system of a (governmental organization) is established. Moreover, through using the fuzzy comprehensive evaluation method, a comprehensive evaluation of knowledge management capability of A is made so as to provide guidance and reference to governmental organizations for the improvement of their knowledge management capabilities.