▎ 摘　　要

NOVELTY - The utility model relates to the technical field of constant temperature hair straightener, specifically to negative ion constant temperature double curing hair straightener, comprising a clamping plate, the clamping plate is provided with two groups, the ends of two groups of clamping plates are rotatably connected by a rotating shaft assembly; two groups of clamping plates are provided with a groove, the groove is provided with a heating control assembly with limiting function; the shifting block slides along the rectangular hole, the shifting block drives the bearing block, the moving bearing block presses two groups of limiting strips, the limiting strip bends and deforms towards one side, at the same time, the bearing block pushes the flashboard to be inserted into the slot along the rectangular groove, until the bearing block is separated from two groups of limiting strips, the bearing block is located between the two groups of bearing block end, Because the plug board is inserted into the slot, the whole set of heating control assembly is limited in the groove, realizing the installation of the heating control assembly.