Infusion support capable of being stably limited

The utility model relates to the technical field of infusion, in particular to an infusion support capable of being stably limited, which comprises a fixing rod and a sliding rod nested in the fixing rod, a linkage rod is arranged in the sliding rod, a button is sleeved on the lower portion of the linkage rod, a pressing plate is fixedly connected onto the linkage rod, and the pressing plate is fixedly connected onto the sliding rod. A first spring abuts against the portion between the pressing plate and the upper portion of the inner side of the sliding rod, the upper portion of the sliding rod is fixedly connected with an L-shaped plate, a sliding groove is formed in the L-shaped plate, a sliding plate is slidably connected into the sliding groove, and a limiting groove is formed in the inner side of the fixing rod. The upper portion of the sliding plate is fixedly connected with a limiting block which can be connected with the limiting groove in a clamped mode, and a connecting rod is rotationally connecte