Pericardium drainage tube fixator

A pericardium drainage tube fixator effectively solves the problem that a drainage tube and a drainage bag are not firmly connected. Comprising a drainage tube in the front-back axial direction, a cylinder with a forward opening is coaxially arranged on the drainage tube, a connecting tube communicated with the drainage tube is coaxially arranged in the cylinder, an annular groove is coaxially formed in the cylinder, an annular plate is coaxially and rotationally connected in the annular groove, and a plurality of arc-shaped grooves which are evenly distributed in the circumferential direction of the annular plate and are through front and back are formed in the inner side of the annular plate; a plurality of connecting rods in one-to-one correspondence with the arc-shaped grooves are hinged into the annular groove, the rear ends of the connecting rods can make contact with the side walls of the arc-shaped grooves, the connecting rods are slidably connected with push blocks, push rods are hinged to the push b