Supercritical fluid extraction method

The invention belongs to the technical field of extraction. The invention particularly relates to a supercritical fluid extraction method. A supercritical fluid extraction device used in the method comprises a support base, moving wheels are arranged at the four corners of the bottom end of the support base, fixing blocks are arranged on one sides of the moving wheels and fixed to the bottom of the support base, adjusting rods are connected into the fixing blocks in a sliding mode, sliding groove holes are formed in the surfaces of the adjusting rods, round blocks are connected to one sides ofthe interiors of the sliding groove holes in a sliding mode, and threaded rods are connected to one sides of the fixing blocks in a threaded mode. According to the invention, the fixing block is designed, the adjusting rods are arranged in a connected mode, the height of the bottom block can freely descend to make rapid contact with the contact face through the designed adjusting rods under the action of the total gravit