This paper reported the result of eight rare-earth elements (REE) in 29 cultivated fluvo-aquic soil samples collected from Tianjin region determined by instrumental neutron activation analysis.Although the recent alluvial deposits on which these soils were derived as their parent materials were different in their origins,the patterns of REE rnntent and distribution of 29 soil samples were quite similar.In comparision with the three heavy REE (Tb,Yb,Lu),the five light REE (La,Ce,Nd,Sm,Eu) tended to be enriched and concentrated in the clay fraction(<0.005 mm) of the soil in the processes of weathering and soil formation.