A control circuit, comprising a control unit, a first feedback unit, and a second feedback unit, wherein: the control unit comprises an inverter and a constant current source; a first terminal of the inverter is connected to a first power supply end; a first terminal of the constant-current source is connected to a second terminal of the inverter, and a second terminal of the constant-current source is connected to a negative power supply end; and an input terminal of the inverter is in short circuit with an output terminal of the inverter and wherein the inverter comprises a first transistor and a second transistor; the first feedback unit comprises a first operational amplifier, wherein the negative input of the first operational amplifier is connected to the second terminal of the inverter; the positive input of the first operational amplifier is connected to a first reference voltage and the output of the first operational amplifier is connected to a thr substrate terminal of the second transistor and a first terminal of a first resistor; the second feedback unit comprises a second operational amplifier, the first resistor, a second resistor and a third transistor, wherein the positive input of the second operational amplifier is connected to the second terminal of the first resistor and a first terminal of the second resistor; the negative input of the second operational amplifier is connected to a second reference voltage; the second terminal of the second resistor is connected to the substrate terminal of the first transistor and to a first terminal of the third transistor; and the output of the second operational amplifier is connected to the gate of the third transistor, whereby the second terminal of the third transistor is connected to the first power supply end; and wherein, the control circuit is configured to adjust the substrate voltage of the first transistor according to the output voltage of the second operational amplifier and adjust the substrate voltage of the second transistor according to the output voltage of the first operational amplifier to make a change value, changing along with a first parameter, of a current of the control unit be within a first range; the first parameter comprises at least one of manufacturing process, power supply voltage, or working temperature of the control circuit. the control unit comprises an inverter and a constant current source; a first terminal of the inverter is connected to a first power supply end; a first terminal of the constant-current source is connected to a second terminal of the inverter, and a second terminal of the constant-current source is connected to a negative power supply end; and an input terminal of the inverter is in short circuit with an output terminal of the inverter and wherein the inverter comprises a first transistor and a second transistor; the first feedback unit comprises a first operational amplifier, wherein the negative input of the first operational amplifier is connected to the second terminal of the inverter; the positive input of the first operational amplifier is connected to a first reference voltage and the output of the first operational amplifier is connected to a thr substrate terminal of the second transistor and a first terminal of a first resistor; the second feedback unit comprises a second operational amplifier, the first resistor, a second resistor and a third transistor, wherein the positive input of the second operational amplifier is connected to the second terminal of the first resistor and a first terminal of the second resistor; the negative input of the second operational amplifier is connected to a second reference voltage; the second terminal of the second resistor is connected to the substrate terminal of the first transistor and to a first terminal of the third transistor; and the output of the second operational amplifier is connected to the gate of the third transistor, whereby the second terminal of the third transistor is connected to the first power supply end; and wherein, the control circuit is configured to adjust the substrate voltage of the first transistor according to the output voltage of the second operational amplifier and adjust the substrate voltage of the second transistor according to the output voltage of the first operational amplifier to make a change value, changing along with a first parameter, of a current of the control unit be within a first range; the first parameter comprises at least one of manufacturing process, power supply voltage, or working temperature of the control circuit.