本文在一般均衡框架和Aghion&Howitt垂直创新的理论基础上,引入政府部门,建立了含政府R&D资助行为的内生增长模型,通过参数校准和数值模拟得到:在政府不干预经济的情况下,单纯依靠私人研发部门的技术进步获得的经济增长会遇到“瓶颈”问题,而简单地通过政府干预也并不一定能有效地解决这一问题,它还跟政府资助的方式有关。只有税收优惠的方式才能较好地突破增长的瓶颈,而在研发补贴方式中,政府的研发支出可能会挤出企业的创新投入,并不能获得很好的政策效果。 Based on the general equilibrium framework and the vertical innovation theory of Aghion & Howitt, this paper introduces government departments and establishes an endogenous growth model with government R & D-funded activities. Through parameter calibration and numerical simulation, we get: In the government’s non-intervention economy, The economic growth achieved by the technological progress of private R & D departments will encounter the problem of “bottleneck”, and the simple intervention by the government does not necessarily solve the problem effectively. It is also related to the way government subsidies. Only tax incentives can break through the bottleneck of growth. In research and development of subsidies, R & D spending by the government may squeeze innovation investment from enterprises and can not achieve good policy results.