A sintered ferrite magnet comprising metal elements of Ca, La, Fe and Co, whose atomic ratios are represented by the general formula of Ca1-xLaxFe2n-yCoy, wherein x and y, and n representing a molar ratio meet 0.3≦x≦0.6, 0.25≦y≦0.5, and 3≦n≦6, and further comprising 0.2% to 0.35% by mass of SiO2.