REE determinations were conducted for their respective contents on granitoid rocks inSouth China,which differ in age,composition and origin,by means of chemical-X-rayfluorescence spectrometry and instrumental neutron activation analysis.Granites under consideration can be divided into three major categories in terms of chon-drite normalized REE distribution patterns and δEu values.1.REE distribution pattern is approximately expressed by a smooth curve,with unre-markable negative Eu anomaly and δEu value greater than 0.5.2.REE distribution pattern exhibits a moderately remarkable negative Eu anomaly withδEu value in the range of 0.3—0.4.3.REE distribution pattern gives a greatly remarkable negative Eu anomaly,withδEu value being less than 0.2.The granites belonging to the first category are mostly older in age and closely con-nected with granitization in origin,those to the second category show a number of evidencesfor magmatic origin and those to the third category are especially distinguishable for theircharacterisitic features of later magmatic differentiation and replacement. REE determinations were conducted for their respective contents on granitoid rocks in South China, which differ in age, composition and origin, by means of chemical-X-ray fluorescence spectrometry and instrumental neutron activation analysis. Grants under consideration can be divided into three major categories in terms of chon-drite normalized REE distribution patterns and δEu values.1.REE distribution pattern is approximately expressed by a smooth curve, with unre-markable negative Eu anomaly and δEu value greater than 0.5.2.REE distribution pattern exhibits a moderately significant negative negative Eu anomaly with δEu value in the range of 0.3-0.4.3 .REE distribution pattern gives a greatly remarkable negative Eu anomaly, with δEu value being less than 0.2. The granites belonging to the first category are mostly older in age and closely con-nected with granitization in origin, those to the second category show a number of evidences for magmatic origin and those to the third category are especially distinguishable for theircharacterisitic features of later magmatic differentiation and replacement.