A method for heating a tank of an induction cooking equipment, performed by an induction cooking equipment, characterized in that the method comprises: determining a material type of a tank; and selecting a voltage change curve matching with the material type for use in a cooking process of the induction cooking equipment which the tank belongs to; wherein the surface of the tank comprises a physical structure corresponding to its own material type, the step of determining a material type of the tank comprising: detecting a physical structure of a surface of the tank by a detection structure in an equipment body of the induction cooking equipment after the tank is installed into the equipment body so as to determine the material type of the tank; wherein the physical structure is a bulge structure on the bottom of the tank, the material type corresponding to the location of the bulge structure on the bottom of the tank; the detection structure is a plurality of sunken structures (920,930) on the bottom of the inside of the equipment body, and the plurality of sunken structures matching with bulge structures corresponding to a plurality of material types respectively; the step of detecting a physical structure of the surface of the tank by a detection structure in an equipment body comprising: determining a corresponding material type according to a sunken structure in the detection structure matching with a bulge structure on the bottom of the tank after the tank is installed into the equipment body of the induction cooking equipment. determining a material type of a tank; and selecting a voltage change curve matching with the material type for use in a cooking process of the induction cooking equipment which the tank belongs to; wherein the surface of the tank comprises a physical structure corresponding to its own material type, the step of determining a material type of the tank comprising: detecting a physical structure of a surface of the tank by a detection structure in an equipment body of the induction cooking equipment after the tank is installed into detecting a physical structure of a surface of the tank by a detection structure in an equipment body of the induction cooking equipment after the tank is installed into the equipment body so as to determine the material type of the tank; wherein the physical structure is a bulge structure on the bottom of the tank, the material type corresponding to the location of the bulge structure on the bottom of the tank; the detection structure is a plurality of sunken structures (920,930) on the bottom of the inside of the equipment body, and the plurality of sunken structures matching with bulge structures corresponding to a plurality of material types respectively; the step of detecting a physical structure of the surface of the tank by a detection structure in an equipment body comprising: determining a corresponding material type according to a sunken structure in the detection structure matching with a bulge structure on the bottom of the tank after the tank is installed into the equipment body of the induction cooking equipment. determining a corresponding material type according to a sunken structure in the detection structure matching with a bulge structure on the bottom of the tank after the tank is installed into the equipment body of the induction cooking equipment.