Drainage support used after brain surgery

The utility model belongs to the technical field of drainage supports used after brain operations, and particularly relates to a drainage support used after brain operations. Comprising a bottom plate, a supporting pipe is fixed to the top of the bottom plate, a supporting column is installed in the supporting pipe in a penetrating mode, a transverse rod is fixed to the upper end of the supporting column, a hook is fixed to the transverse rod, the supporting pipe is independently sleeved with two sleeves distributed up and down, reference rods are fixed to the side walls of the sleeves, and installation grooves are formed in the side walls of the sleeves; a pressing plate is arranged in the mounting groove, a tooth groove is formed in the outer side wall of the supporting pipe, clamping teeth are fixed to the lower end of the pressing plate, an elastic assembly is arranged between the pressing plate and the sleeve, and scale marks are arranged on the outer side wall of the supporting pipe. The position of the