X type folding bracket

The invention discloses an X type folding bracket. The X type folding bracket comprises a first supporting rod assembly and a second supporting rod assembly which are integrally shafted through a hinge pin; a height adjusting device is arranged at a part in which the first supporting rod assembly and the second supporting rod assembly are shafted. The X type folding bracket is characterized in that the height adjusting device comprises a first rotating plate, a second rotating plate and a fixed plate; an arc-shaped sliding groove is arranged in the fixed plate; an arc-shaped adjusting groove is arranged in the first rotating plate; an arc-shaped limiting groove in which a limiting block is arranged is formed in the second rotating plate; an adjusting pin and a limiting pin are fixedly arranged on the limiting block, wherein the adjusting pin passes through the arc-shaped adjusting groove, and while the limiting pin extends into the arc-shaped limiting groove; a positioning device is arranged at the end part o