A smoking set control circuit, being a control circuit for a smoking set with a heater, comprising a power circuit, a sampling circuit, a voltage regulating circuit and a microcontroller, wherein the sampling circuit comprising a first sampling circuit and a second sampling circuit; the first sampling circuit being configured to sample first electrical parameters at the front end of the voltage regulating circuit; the voltage regulating circuit comprising power tubes; the second sampling circuit being configured to sample second electrical parameters at the back end of the voltage regulating circuit; characterized in that: the microcontroller being configured to: in a preheating and heating-up stage of the heater, control the power tubes to work at a plurality of different preset switching frequencies; acquire the first electrical parameters and the second electrical parameters at different preset switching frequencies, and accordingly determine corresponding efficiencies of the voltage regulating circuit at different preset switching frequencies; control the power tube to take the preset switching frequency corresponding to the highest efficiency among the corresponding efficiencies as the working frequency; in a heat preservation stage of the heater, stage, control the power tubes to work at a plurality of different preset switching frequencies; acquire the first electrical parameters and the second electrical parameters at different preset switching frequencies, and accordingly determine corresponding efficiencies of the voltage regulating circuit at different preset switching frequencies; control the power tube to take the preset switching frequency corresponding to the highest efficiency among the corresponding efficiencies as the working frequency; wherein the switching frequencies of the power tubes in the preheating and heating-up stage are higher than the switching frequencies of the power tubes in the heat preservation stage. the first sampling circuit being configured to sample first electrical parameters at the front end of the voltage regulating circuit; the voltage regulating circuit comprising power tubes; the second sampling circuit being configured to sample second electrical parameters at the back end of the voltage regulating circuit; characterized in that: the microcontroller being configured to: in a preheating and heating-up stage of the heater, control the power tubes to work at a plurality of different preset switching frequencies; acquire the first electrical parameters and the second electrical parameters at different preset switching frequencies, and accordingly determine corresponding efficiencies of the voltage regulating circuit at different preset switching frequencies; control the power tube to take the preset switching frequency corresponding to the highest efficiency among the corresponding efficiencies as the working frequency; in a heat preservation stage of the heater, stage, control the power tubes to work at a plurality of different preset switching frequencies; acquire the first electrical parameters and the second electrical parameters at different preset switching frequencies, and accordingly determine corresponding efficiencies of the voltage regulating circuit at different preset switching frequencies; control the power tube to take the preset switching frequency corresponding to the highest efficiency among the corresponding efficiencies as the working frequency; wherein the switching frequencies of the power tubes in the preheating and heating-up stage are higher than the switching frequencies of the power tubes in the heat preservation stage. in a preheating and heating-up stage of the heater, control the power tubes to work at a plurality of different preset switching frequencies; acquire the first electrical parameters and the second electrical parameters at different preset switching frequencies, and accordingly determine corresponding efficiencies of the voltage regulating circuit at different preset switching frequencies; control the power tube to take the preset switching frequency corresponding to the highest efficiency among the corresponding efficiencies as the working frequency; in a heat preservation stage of the heater, stage, control the power tubes to work at a plurality of different preset switching frequencies; acquire the first electrical parameters and the second electrical parameters at different preset switching frequencies, and accordingly determine corresponding efficiencies of the voltage regulating circuit at different preset switching frequencies; control the power tube to take the preset switching frequency corresponding to the highest efficiency among the corresponding efficiencies as the working frequency; wherein the switching frequencies of the power tubes in the preheating and heating-up stage are higher than the switching frequencies of the power tubes in the heat preservation stage.