A liquid ejection apparatus comprising: a liquid ejection head including: an inlet opening into which liquid flows; an outlet opening from which the liquid having flowed into the inlet opening flows; an inside channel (72,73) communicating the inlet opening and the outlet opening with each other; and a plurality of ejection openings through which is ejected the liquid having flowed through a plurality of individual channel branched from the inside channel (72,73); a tank storing the liquid to be supplied to the liquid ejection head; a supply channel communicating the tank and the inlet opening with each other; a return channel communicating the tank and the outlet opening with each other; a supply device configured to supply the liquid in the tank to the inside channel (72,73) via the supply channel; and a controller configured to control the supply device, wherein the controller is configured to control the supply device to perform a circulating operation in which the liquid in the tank is transferred to the supply channel, the inside channel (72,73), and the return channel in order and returns to the tank, and wherein the controller is configured to control the supply device such that a unit-time supply amount that is an amount of the liquid to be supplied to the inside channel (72,73) per unit time in a first period in the circulating operation is a first liquid supply amount that is the smallest supply amount in the circulating operation and the unit-time supply amount in a second period is a second liquid supply amount that is the largest supply amount in the circulating operation, wherein the first period is a period which lasts from start of the circulating operation the second period is a last period in the circulating operation, and wherein the controller is configured to control the supply device such that a pressure in the ink supply channel in the first period is a first pressure that is the smallest pressure in the circulating operation and the pressure in the second period is a second pressure that is the largest pressure in the circulating operation, characterized in that the controller is configured to control the supply device such that the unit-time supply amount in the circulating operation is increased from the first liquid supply amount to the second liquid supply amount by increasing the unit-time supply amount stepwise a plurality of times, and the controller is configured to control the supply device such that the pressure in the circulating operation is increased from the first pressure to the second pressure by increasing the pressure stepwise a plurality of times. a liquid ejection head including: an inlet opening into which liquid flows; an outlet opening from which the liquid having flowed into the inlet opening flows; an inside channel (72,73) communicating the inlet opening and the outlet opening with each other; and a plurality of ejection openings through which is ejected the liquid having flowed through a plurality of individual channel branched from the inside channel (72,73); an inlet opening into which liquid flows; an outlet opening from which the liquid having flowed into the inlet opening flows; an inside channel (72,73) communicating the inlet opening and the outlet opening with each other; and a plurality of ejection openings through which is ejected the liquid having flowed through a plurality of individual channel branched from the inside channel (72,73); a tank storing the liquid to be supplied to the liquid ejection head; a supply channel communicating the tank and the inlet opening with each other; a return channel communicating the tank and the outlet opening with each other; a supply device configured to supply the liquid in the tank to the inside channel (72,73) via the supply channel; and a controller configured to control the supply device, wherein the controller is configured to control the supply device to perform a circulating operation in which the liquid in the tank is transferred to the supply channel, the inside channel (72,73), and the return channel in order and returns to the tank, and wherein the controller is configured to control the supply device such that a unit-time supply amount that is an amount of the liquid to be supplied to the inside channel (72,73) per unit time in a first period in the circulating operation is a first liquid supply amount that is the smallest supply amount in the circulating operation and the unit-time supply amount in a second period is a second liquid supply amount that is the largest supply amount in the circulating operation, wherein the first period is a period which lasts from start of the circulating operation the second period is a last period in the circulating operation, and wherein the controller is configured to control the supply device such that a pressure in the ink supply channel in the first period is a first pressure that is the smallest pressure in the circulating operation and the pressure in the second period is a second pressure that is the largest pressure in the circulating operation, characterized in that the controller is configured to control the supply device such that the unit-time supply amount in the circulating operation is increased from the first liquid supply amount to the second liquid supply amount by increasing the unit-time supply amount stepwise a plurality of times, and the controller is configured to control the supply device such that the pressure in the circulating operation is increased from the first pressure to the second pressure by increasing the pressure stepwise a plurality of times.