The invention provides a disposable infusion apparatus with a precise filter capable of exhausting gas automatically, and belongs to the field of medical equipment. The disposable infusion apparatus with the precise filter capable of exhausting gas automatically comprises a cap bag, a bottle inserting plastic needle, a first infusion tube section, a first water stopping valve, a flat-bottom drip chamber, a gas exhausting tube, a second infusion tube section, an adjusting valve, the precise filter capable of exhausting gas automatically, a third infusion tube section, a second water stopping valve, a Luer, a Luer fitting and an intravenous needle, wherein the gas exhausting tube is arranged in the flat-bottom dripping chamber; the cap bag sleeves the bottle inserting plastic needle; the bottle inserting plastic needle is connected with the flat-bottom dripping chamber through the first infusion tube section; the first water stopping valve sleeves the first infusion tube section; the flat-bottom dripping chamber is connected with the precise filter capable of exhausting gas automatically through the second infusion tube section; the adjusting valve is mounted on the second infusion tube section; the precise filter capable of exhausting gas automatically is connected with the Luer through the third infusion tube section; the second water stopping valve sleeves the third infusion tube section; the Luer is connected with the Luer fitting in a clamping mode; and the Luer fitting is connected with the intravenous needle.