The utility model belongs to the technical field of oil field oil recovery techniques and particularly relates to a quick oil-water interface measurement device which comprises a metering pipe provided with a connector. The metering pipe is connected with a supporting rod through the connector, the bottom of the metering pipe is provided with an opening, and a close switch is arranged at the opening end. The close switch is structurally characterized in that a valve switch is arranged at the opening end of the metering pipe, a pull cord is connected to a valve handle of the valve switch, a movable pulley is arranged on a fixing part which is arranged on the upper portion of the metering pipe, and a pull ring is arranged at one end of the pull cord which bypasses the movable pulley. The quick oil-water interface measurement device has the advantages that since the metering pipe and the ball valve switch are used for oil-water sampling, the device is simple in structure, low in cost, easy to move integrally, and oil-water content can be measured quickly; and the metering pipe and the supporting rod are connected with each other, so that oil-water resistance can be avoided effectively to protect the metering pipe from influences of external force to enter an oil storage tank stably.