本文將政府部門引入King， Plosser與 Rebelo (1988) 之新古典成長模型中並以此探討預期與非預期之恆常性與臨時性政府支出的效果。最後由模擬分析知政府支出在政策實行期間對投資有明顯的排擠效果，然此效果將因技術進步而減弱，此外人們對風險的態度亦明顯的影響各內生變數的波動幅度。

This paper extends King, Plosser and Rebelo (1988) to include a government sector and discusses the effects of permanent and transitory government spending which are either anticipated or unanticipated. Re­sults from dynamic simulations point out that government spending has significant crowding-out effects on investment during the execution pe­riocl, but its magnitude decreases if technology improvement in produc­tion is concerned. The paper also concludes that the altitude toward risk has significant impacts on the dynamic transition of endogenous variables in the system.