At present, the elevation survey of Everest in 2020 has entered the summit survey stage. Everest is the highest altitude in the world. The exploration of Everest elevation and related knowledge, as well as the continuous progress of related technologies, represent the spirit of human exploration of nature, and have become an important sign of human understanding and understanding of the earth. In history, human beings have taken the steps to explore the world's highest altitude since more than 300 years ago. Explorers and surveyors from many countries have contributed to the accurate measurement of the height of Everest. Today, surveying and mapping workers in China will climb Everest again, use more advanced comprehensive modern geodetic technology to measure the height of Everest and refresh the height of human understanding of the world.