Abstract: Distribution of elements content (As、Ni、Cr、Mn) in steel's section were analyzed by X-ray Fluorescence Spectrometry (XRF). The results of distribution for As and Ni increased from center to edge. Also is the Cr, but relatively invisible. The distribution of Mn is relationally homogeneous. These show that As、Ni in steel having seriously freeze and aggregation phenomenon. By contrary, the phenomenon was so slight in Cr、Mn.