The Digital Planet Teaching System is a highly representative digital educational equipment in the information age and is also the first single digital teaching instrument in China to achieve three-dimensional dynamic display.It utilizes an advanced three-dimensional image processing platform and precision optical technology to quickly display multimedia resources on a digital spherical projection screen, vividly and three-dimensionally reproducing natural and social science phenomena and processes. It is widely used in multi-disciplinary teaching in primary and secondary schools and popular science education, meeting the needs of diversified and personalized education, promoting teaching reforms among teachers and stimulating students' learning interests.This system has been included in many important standards and topics by the Ministry of Education. Most provincial and municipal educational equipment departments have also incorporated it into their local equipment standard catalogs. It consists of hardware and software. The hardware includes projectors, fisheye lens groups, etc., and the software includes platform software, resources and instruction manuals, etc.