Intravenous injection medicine injection speed controller

The utility model discloses an intravenous injection medicine injection speed controller. Controller housing, wherein the controller shell is a fully-enclosed container with a hollow interior; an injector push handle inlet is formed in the bottom of the side surface of the controller shell; a pair of injector locking structures is arranged on the symmetrical side surfaces of the two sides of the inlet of the injector push handle; a knob is arranged on the side surface symmetrical to the side surface where the injector push handle inlet is formed; a toothed connecting rod is arranged in the controller shell; a movement direction conversion structure is arranged below the toothed connecting rod; a toothed push rod in contact with the inner wall of the controller shell is arranged below the motion direction conversion structure; the toothed connecting rod, the movement direction conversion structure and the toothed push rod are sequentially connected in a meshed mode, the push injection speed is made to be visua