The distribution of V-segregation at longitudinal and cross section of ø380 mm continuous casting bloom of bearing steel GCrl5 and the structure morphology of V-segregation band have been studied. Results show that the V-segregation forms in central equiaxial crystal zone by symmetrical about center line of casting bloom and the segregation bands are parallel each another at longitudinal section; and the morphology of V-segregation bands at cross section is related with cutting location which presents with concentric distribution; there is lots of liquation carbonide in V-segregation band that is an important factor to form serious segregation.