An image heating apparatus that heats an image formed on a recording material, comprising: a heater including a first heat generating block (302-1, 302-3; 702-3, 702-5), and a second heat generating block (302-2; 702-4) disposed adjacent to the first heat generating block (302-1, 302-3; 702-3, 702-5) in a longitudinal direction of the heater, the longitudinal direction being orthogonal to a conveying direction of the recording material; and a power control portion configured to control electric power to be supplied to the first and second heat generating blocks (302-1, 302-2, 302-3; 702-3, 702-4, 702-5), the power control portion being capable of controlling the electric power to be supplied to the first and second heat generating blocks (302-1, 302-2, 302-3; 702-3, 702-4, 702-5)independently, wherein when the recording material passes the position of the heater, and in the longitudinal direction, when an entire range in which the second heat generating block (302-2; 702-4) is provided is a range in which the recording material passes and only a portion of a range in which the first heat generating block (302-1, 302-3; 702-3, 702-5) is provided is a range in which the recording material passes, the power control portion is configured to control the electric power to be supplied to the first and second heat generating blocks (302-1, 302-2, 302-3; 702-3, 702-4, 702-5) so that an electric power Wd supplied to the first heat generating block (302-1, 302-3; 702-3, 702-5) is smaller than an electric power Wc supplied to the second heat generating block (302-2; 702-4), wherein the power control portion is configured to control the electric power so that a ratio Wd/Wc of the electric power Wd supplied to the first heat generating block (302-1, 302-3; 702-3, 702-5) to the electric power Wc supplied to the second heat generating block (302-2; 702-4) decreases as a recording material passing range in the range in which the first heat generating block (302-1, 302-3; 702-3, 702-5) is provided decreases. a heater including a first heat generating block (302-1, 302-3; 702-3, 702-5), and a second heat generating block (302-2; 702-4) disposed adjacent to the first heat generating block (302-1, 302-3; 702-3, 702-5) in a longitudinal direction of the heater, the longitudinal direction being orthogonal to a conveying direction of the recording material; and a power control portion configured to control electric power to be supplied to the first and second heat generating blocks (302-1, 302-2, 302-3; 702-3, 702-4, 702-5), the power control portion being capable of controlling the electric power to be supplied to the first and second heat generating blocks (302-1, 302-2, 302-3; 702-3, 702-4, 702-5)independently, wherein when the recording material passes the position of the heater, and in the longitudinal direction, when an entire range in which the second heat generating block (302-2; 702-4) is provided is a range in which the recording material passes and only a portion of a range in which the first heat generating block (302-1, 302-3; 702-3, 702-5) is provided is a range in which the recording material passes, the power control portion is configured to control the electric power to be supplied to the first and second heat generating blocks (302-1, 302-2, 302-3; 702-3, 702-4, 702-5) so that an electric power Wd supplied to the first heat generating block (302-1, 302-3; 702-3, 702-5) is smaller than an electric power Wc supplied to the second heat generating block (302-2; 702-4), wherein the power control portion is configured to control the electric power so that a ratio Wd/Wc of the electric power Wd supplied to the first heat generating block (302-1, 302-3; 702-3, 702-5) to the electric power Wc supplied to the second heat generating block (302-2; 702-4) decreases as a recording material passing range in the range in which the first heat generating block (302-1, 302-3; 702-3, 702-5) is provided decreases.