A heating control circuit of an electromagnetic heating apparatus, comprising: a voltage zero-crossing detecting unit configured to detect a voltage zero-crossing signal of an alternating current power source input to the electromagnetic heating apparatus; a resonance heating unit ; a rectifier and filter unit configured to perform rectifying and filtering processing on the alternating current power source which is provided to the resonance heating unit ; a power switch transistor configured to control the resonance heating unit to perform resonance work; a driving unit , wherein the driving unit is coupled to a driving end of the power switch transistor so as to drive the power switch transistor to turn on or to turn off; characterized by a driving and transforming unit , wherein the driving and transforming unit is coupled to the driving end of the power switch transistor so as to change a driving voltage of the power switch transistor ; and a main control unit , wherein the main control unit is coupled to the voltage zero-crossing detection unit , the driving unit , and the driving and transforming unit respectively, and the main control unit is configured to control the driving unit and the driving and transforming unit to make the power switch transistor work under a driving of a first driving voltage before a zero-crossing point of the alternating current power source judged according to the voltage zero-crossing signal, to control the driving and transforming unit to stop working when a voltage of a collector of the power switch transistor oscillates to a minimum, and to control the driving unit to make the power switch transistor work under a driving of a second driving voltage, wherein the second driving voltage is larger than the first driving voltage. a voltage zero-crossing detecting unit configured to detect a voltage zero-crossing signal of an alternating current power source input to the electromagnetic heating apparatus; a resonance heating unit ; a rectifier and filter unit configured to perform rectifying and filtering processing on the alternating current power source which is provided to the resonance heating unit ; a power switch transistor configured to control the resonance heating unit to perform resonance work; a driving unit , wherein the driving unit is coupled to a driving end of the power switch transistor so as to drive the power switch transistor to turn on or to turn off; characterized by a driving and transforming unit , wherein the driving and transforming unit is coupled to the driving end of the power switch transistor so as to change a driving voltage of the power switch transistor ; and a main control unit , wherein the main control unit is coupled to the voltage zero-crossing detection unit , the driving unit , and the driving and transforming unit respectively, and the main control unit is configured to control the driving unit and the driving and transforming unit to make the power switch transistor work under a driving of a first driving voltage before a zero-crossing point of the alternating current power source judged according to the voltage zero-crossing signal, to control the driving and transforming unit to stop working when a voltage of a collector of the power switch transistor oscillates to a minimum, and to control the driving unit to make the power switch transistor work under a driving of a second driving voltage, wherein the second driving voltage is larger than the first driving voltage. <EOS>