U-shaped metal vacuum tube solar collector tubes, vacuum tube and including U-shaped metal pipes and pieces of metal, described in the U-shaped metal cartridge in a vacuum tube, the U-shaped metal tube top out of the mouth , Sheet Metal installed in the vacuum tube, and fixed in the U-shaped metal tube on a vertical tube. The Sheet Metal installed in the U-shaped metal tube on the side of the vertical tube can be so that the water temperature within the ducts and risers side than the other side of VTE in high temperature flow automatically generated strong momentum, with hot and cold water cycle effects, and high efficiency heat conduction, and Buloushui bombing of the advantages, but also because of the U-shaped metal structure is simple, cost much lower than the heat pipe is a cheap products, not only for water tanks together with the overall composition of solar energy use water heaters, and water tanks for separation and the use of split-type solar water heater. U-tube solar collector tube from the vacuum tube, heat and aluminum wing, composed of U-shaped brass. Copper contents of the heat there, aluminum wing pass directly absorbed heat, heat transfer cycle. And dry French solar collector the same as the vacuum tube, water, in the event vacuum tube rupture, the collector can be used as usual.