In a fixing apparatus 200 having a heater 300 capable of selectively causing a plurality of heat generating blocks divided in a longitudinal direction of a substrate 305 to generate heat, an energization control portion 400 acquires, when performing a fixing operation, a cumulative amount of heat generation in each of a plurality of heating areas, a cumulative rotation time of a pressure roller 208, and information on a recording material that passes through a fixing nip portion, and controls energization of heat generating elements 302a and 302b on the basis of the acquired information.