With the expanding scale of China's colleges and universities leading to the expansion of the number of people, the renewal of the concept of education and the gradual opening of colleges and universities, the requirements for the design of campus external space are also higher and gradually tend to be humanized. Sometimes we find that some external interaction spaces carefully designed by designers are often left unattended and unattended due to scale malfunction and lack of psychological experience due to difficulties in using them, such as the large open space behind some dormitory buildings and teaching buildings. In this context, I put forward some suggestions for the design of external interaction space of the campus by studying human perception in the planning and design of the new campus of Hebei Engineering University.