New Public Management (NPM) is to try to achieve the improvement of the organizational effectiveness by advancing the organization control based on Performance Evaluation System and the decentralization of the organization at the same time according to Aucoin (1995). This study aims at providing empirical evidence that NPM on which Aucoin insists is to promote intrinsic motivation and interpersonal facilitation of public officials Job characteristics,intrinsic motivation and interpersonal facilitation are measured by questionnaire and the causal structure is identified by SEM analysis. The main findings were as follows: (a) managerial behavior based on Performance Evaluation System promoted intrinsic motivation and interpersonal facilitation through public officials Job characteristics. (b) Furthermore,managerial behavior based on Performance Evaluation System in conjunction with decentralization of the organization simultaneously promoted intrinsic motivation and interpersonal facilitation through public officials Job characteristics more,compared with the organization in which decentralization of the organization is not performed.