Natural Science Foundation is a general theoretical scientific research, which is divided into general projects, key projects, major projects, major research plans, national science foundation for outstanding young scholars, overseas, Hong Kong and Macao young scholars' cooperative research fund, innovative research group science fund, national basic science talent training fund, special projects, joint funding projects and international (regional) cooperation and exchange projects. The 863 project is generally a national high-tech development research plan; 973 is a national key basic research and development plan. Generally speaking, in terms of the amount, the 973 project has the highest funding, and tens of millions are common; 863 times, ranging from millions to tens of millions. There are relatively few natural science funds, ranging from hundreds of thousands to millions according to different types of projects.