The all-glass vacuum solar collector tube is composed of an inner glass tube with a solar selective absorption coating and a coaxial cover glass tube. The inner and outer tube interlayers are pumped into a high vacuum, which is used to collect solar heat to heat the fluid medium in the tube. Device. A number of all-glass vacuum solar collector tubes must be regularly arranged in an array and assembled with headers, tailstock and reflectors to form a solar collector. It forms a split solar water heating system with circulating pipelines, water storage tanks and other components. [1]