Dagaozhuang iron deposit belongs to "Anshan type" sedimentary metamorphic iron deposit. Its ore bodies are hidden in the depth of 40~48m in the underground. It occurred in ShancaoYu formation of Taishan group. Its lithology is magnet quartzite. The deposit is composed of three ore belts and 9 ore bodies. Among them, Ⅰ 1 ore body is the main ore body; The average grade of TFe is 30.09% and mFe is 22.51 %. Its industrial ore type is weak magnetic lean ore. Through analysis and study on geological characteristics and origin of Dagaozhuang gold deposit, it will provide effective and reasonable exploration method and means for searching the same type of iron deposit.