Provided is a cellulose acylate film formed through melt casting that is capable of being built in liquid-crystal display devices to solve the display trouble at the time of black level of display. That is a cellulose acylate film formed through melt casting, in which the number of polarizing minor impurities is from 0 to 10/mm.sup.2 and the number of black impurities is from 0 to 10/mm.sup.2, and which has a transmittance at 450 nm (T450) of from 90 to 100%.