Three-dimensional printing is an intelligent manufacturing technology and it's a new attempt to manufacture diamond tools with 3D printing which has distinct advantages, such as highly integrated products, precision manufacturing, easy to handle, and capable of products with complex shapes. These characteristics greatly help in the manufacturing of diamond tools. Through the 3D printing technology, the diamond tools can be further developed to a certain extent in respects of having ultra-thin, tiny and irregular shapes, which is difficult for other conventional methods. However, there are some problems, such as the lack of qualified diamond powder, as well as the carbonization, granularity and concentration of diamonds, which will be solved as 3D printing technology further develops.