根据现有的资料，我们整理了一份部分国家支持科学技术事业发展的税收优惠措施的资料。从资料看，各国为了刺激科技进步，采取了多种优惠办法。主要体现在所得税上，有四个方面：一是税收减免。对需要鼓励的企业实行减免税或规定所得税及其它税的最高限额。二是投资税收抵免。 Based on the available information, we compiled information on tax incentives that some countries support in the development of science and technology. According to the information, in order to stimulate scientific and technological progress, various countries have adopted various preferential measures. Mainly reflected in the income tax, there are four aspects: First, tax relief. Enterprises need to encourage the implementation of tax relief or the provisions of the income tax and other taxes ceiling. Second, investment tax credit.