An induction cooking system, comprising: a main heating coil heating a heated object placed on a top plate; a group of sub heating coils including a plurality of sub heating coils (SC1 to SC4) disposed adjacent to an outside of the main heating coil; a main inverter circuit supplying a high-frequency current to the main heating coil; a group of sub inverter circuits independently supplying the high-frequency current to each of the plurality of sub heating coils (SC1 to SC4) of the group of sub heating coils; a placement-of-heated-object determination unit determining whether a same heated object is placed above the main heating coil and at least one of the plurality of sub heating coils (SC1 to SC4); an input unit inputting external heating power setting information during induction heating; characterized by a display means displaying the setting information of the input unit; and an energization control circuit controlling, on the basis of the setting information of the input unit, output of each of the main inverter circuit and the group of sub inverter circuits and controlling the display means, wherein, an outer diameter shape of the main heating coil is substantially circular, and an outer diameter shape of each sub heating coil (SC1 to SC4) is such that a side edge adjacent to a peripheral line of the main heating coil has a bent shape extending along the peripheral line of the main heating coil, and wherein, when a predetermined heating power setting information is input by the input unit, on the basis of information from the placement-of-heated-object determination unit, the energization control circuit controls the output of the main inverter circuit and the output of the group of sub inverter circuits to become a predetermined distribution such that a cooperative heating operation with a heating power value set by a user is performed, when one or some of the sub heating coils (SC1 to SC4) that is performing the cooperative heating operation is increased or reduced in number, or is switched to a different one of the sub heating coils (SC1 to SC4), the energization control circuit maintains the distribution of the output before change thereof and makes the display means display the predetermined heating information regardless of the increase or reduction in the number of sub heating coils (SC1 to SC4) that is performing the cooperative heating operation or the switching to the different sub heating coil (SC1 to SC4). a main heating coil heating a heated object placed on a top plate; a group of sub heating coils including a plurality of sub heating coils (SC1 to SC4) disposed adjacent to an outside of the main heating coil; a main inverter circuit supplying a high-frequency current to the main heating coil; a group of sub inverter circuits independently supplying the high-frequency current to each of the plurality of sub heating coils (SC1 to SC4) of the group of sub heating coils; a placement-of-heated-object determination unit determining whether a same heated object is placed above the main heating coil and at least one of the plurality of sub heating coils (SC1 to SC4); an input unit inputting external heating power setting information during induction heating; characterized by a display means displaying the setting information of the input unit; and an energization control circuit controlling, on the basis of the setting information of the input unit, output of each of the main inverter circuit and the group of sub inverter circuits and controlling the display means, wherein, an outer diameter shape of the main heating coil is substantially circular, and an outer diameter shape of each sub heating coil (SC1 to SC4) is such that a side edge adjacent to a peripheral line of the main heating coil has a bent shape extending along the peripheral line of the main heating coil, and wherein, when a predetermined heating power setting information is input by the input unit, on the basis of information from the placement-of-heated-object determination unit, the energization control circuit controls the output of the main inverter circuit and the output of the group of sub inverter circuits to become a predetermined distribution such that a cooperative heating operation with a heating power value set by a user is performed, when one or some of the sub heating coils (SC1 to SC4) that is performing the cooperative heating operation is increased or reduced in number, or is switched to a different one of the sub heating coils (SC1 to SC4), the energization control circuit maintains the distribution of the output before change thereof and makes the display means display the predetermined heating information regardless of the increase or reduction in the number of sub heating coils (SC1 to SC4) that is performing the cooperative heating operation or the switching to the different sub heating coil (SC1 to SC4).