The formation mechanism of “white band” and central carbon segregation of high-carbon Cr bearing steel concasting billets are discussed in this paper. The maximum oxygen content in the steel produced by concasting process was 13 ?10~-6 with an average oxygen content of 9.3?10~(-6). Comparison of metallurgical quality and fatigue property between the concasting steel (CC) and ingot casting steel (IC) showed that the carbon segregation (C/C_0) in former steel was 0.92~1.10 and its fatigue life was equal to that of the latter steel. The formation mechanism of “white band ” and central carbon segregation of high-carbon Cr bearing steel concasting billets are discussed in this paper. The maximum oxygen content in the steel produced by concasting process was 13? 10 ~ -6 with an average Comparison of metallurgical quality and fatigue property between the concasting steel (CC) and ingot casting steel (IC) showed that the carbon segregation (C / C_0) in former steel was 0.92 ~ 1.10 and its fatigue life was equal to that of the latter steel.