Abstract: Practical training is an important link in the teaching system of information and computing science in engineering colleges and universities. However, there are still some defects in the practical training system of most colleges and universities, such as obsolete training content and the disconnection between practical teaching content and course content as well as enterprise requirements. In the practical training of information and computing science specialty, a four-level practical training platform including basic verification platform, comprehensive design training platform, open research and innovation platform and employment practice platform is built by running through the whole learning stage of practical learning in colleges and universities, so as to train students' scientific research innovative awareness and practical innovation ability.