The invention discloses an anesthetic consumption detecting device for an anesthesiology department. The device comprises a cylinder. The right end of the cylinder is open, the inner wall of the cylinder is in sliding connection with the side face of a rubber sliding block, a second bearing is fixedly arranged at the right side face of the rubber sliding block, the inner race of the second bearingis fixedly connected with the left end of a screw, a handle is fixedly arranged at the right end of the screw, the right side of the side face of the screw is fixedly connected with the inner race ofa first bearing, a marking device is installed on the side face of the first bearing, scales are formed at the outer side face of the cylinder in the left-right direction, the rubber ring is locatedat the starting position of the rubber sliding block, when a set amount of anesthetic is injected, a doctor moves a utility knife through the left end of an elastic rod, the utility knife is used forcutting marks on the cylinder, every injection amount is recorded, and the single-time injection amount and the total injection amount of anesthetic can be easily controlled; the lower surface of a fixed block is adhesively connected to an external tabletop through the fixing block, the arc inner side of an arc clamping plate and the outer side face of the cylinder are clamped, the cylinder is convenient to take or place, and the working efficiency of the doctor is improved.