The utility model relates to the technical field of oil well produced fluid metering devices, in particular to an air cooing metering device which comprises a pry seat, a gas-liquid separator, an air cooler, a metering separating tank and an oil gathering pipeline, wherein the gas-liquid separator, the air cooler, the metering separating tank and the oil gathering pipeline are arranged on the pry seat. An inlet of the gas-liquid separator is provided with a produced fluid feeding pipe. A liquid-phase outlet of the gas-liquid separator is connected to the oil gathering pipeline through a liquid-phase transmission pipeline. A liquid-phase flow meter is fixedly arranged between the liquid-phase transmission pipeline and the oil gathering pipeline. A separator liquid level control valve is fixedly arranged on the liquid-phase transmission pipeline. The air cooing metering device is reasonable and compact in structure and convenient to use; the 'separating plus air cooling plus metering' technology is adopted, so that metering error generated by steam carrying of a conventional metering device under the high-temperature working condition is avoided, the metering accuracy of single well produced fluid through SAGD is improved, and meanwhile the steam quantity carried by feed liquid, the steam-liquid ratio and other indexes can be accurately metered and calculated.