The is a paper devoted to the analysis of functions and structures of budgetary review of the Legislative Yuan (L Y), the Republic of China. In accordance with the ROC's Constitution, the L Y is empowered to review bugetary proposals from the Executive Yuan. However. the legislative members are too busy to complete these tasks owing to the low quality of Legislative staffs and weak function of Legislative Assisstant System. This research was conducted. on the one hand. on the base of the experience operating in the Congress of the developed countries such as USA British, Japan. and others. On the other hand. the author has surveyed more than eighty legislative members and legislative researchers through the depth-interview and mailedquestionnaire. The author analyzed the problerns and difficulities the LY now encountered and arbitrarily focused upon the description in the inner system of the LY. Finally several issueoriented strategies were provided to strengthen the function of budgetary review.