Silicon carbide ceramic connecting method and silicon carbide heat exchange tube manufactured through silicon carbide ceramic connecting method

The invention belongs to the technical field of ceramic connection, and discloses a silicon carbide ceramic connection method and a silicon carbide heat exchange tube manufactured through the silicon carbide ceramic connection method. The silicon carbide ceramic connection method comprises the following steps: (1) preparing glass powder, and pressing the glass powder into a green block; (2) laser micro-texture treatment is conducted on the surfaces to be connected of the two silicon carbide parts; (3) the green block is placed between two silicon carbide parts with the surfaces to be connected subjected to laser micro-texture treatment, and an assembly to be connected is obtained; and (4) the to-be-welded part of the to-be-connected assembly is put into a heating furnace for welding treatment, and the silicon carbide ceramic connecting piece is obtained after cooling. The obtained silicon carbide connecting piece joint has good corrosion resistance and high-temperature self-sealing performance, and keeps high