The invention discloses a high ferrochrome roller used for a large-sized wide and thick plate rolling mill. The high ferrochrome roller comprises a roller core, a roller neck and a roller body workinglayer. The roller body working layer comprises, by mass, 2.40%-3.30% of C, 0.60%-1.00% of Si, 0.90%-1.20% of Mn, 15.00%-18.00% of Cr, 1.10%-1.70% of Ni, 0.80%-1.40% of Mo, 0.10%-0.60% of V, 0-0.10% of S, 0-0.05% of P, and the balance Fe and inevitable impurities. By adjusting the heat treatment technology, the mechanical property of the roller is improved, the abrasion resistance and millimeter rolling quantity of the roller are increased, and the service life of the roller is prolonged.