The invention relates to a circuit of an intelligent power saving device for a heating boiler system, comprising two intelligent power saving control circuits, an air blower, a draught fan, two main loop circuits and a control circuit, wherein two intelligent power saving control circuits are composed of two micro-differential pressure transmitters, two PID controllers, two high-performance transducers and two motor-drive systems which are connected through the circuit; and the two main loop circuits are composed of a breaker, a combination switch, two intermediate relays, three contactors and the high-performance transducers which are connected through the circuit and respectively achieve the control and conversion of intelligent power saving, bypass and stopping. The circuit of the intelligent power saving device for the heating boiler system provided by the invention can respectively ensure the control precision of the air blower and the draught fan in the heating boiler system, and regulate the speed of the motor at random according to the production requirements to cause the output air quantity to be subjected to stepless adjustment, thereby saving electricity and reducing consumption as well as improving work efficiency of production. The design and production processing of the circuit is simple, and the operation of the device is convenient.