The invention relates to the technical field of heavy-duty dump trucks, and in particular to a lifting balance monitoring control system for the heavy-duty dump trucks and a monitoring control method.The system comprises a PLC (Programmable Logic Controller) control correction system and a hydraulic system, wherein the PLC control correction system comprises a displayer and a PLC controller and also comprises a tilting angle sensor, a lifting angle sensor and a displacement sensor which are connected with an IO (Input Output) port of the PLC controller; the hydraulic system comprises a frontdirect-pushing hydraulic cylinder, a correction hydraulic cylinder, a hydraulic oil tank and a hydraulic pump; an air-controlled distribution valve, a medium-stop switching electromagnetic reversing valve, a descending switching electromagnetic reversing valve, a lifting control valve and an electromagnetic multi-way reversing valve are arranged on the pipelines for connecting the hydraulic oil tank with the front direct-pushing hydraulic cylinder and the correction hydraulic cylinder; and the PLC controller is connected with the air-controlled distribution valve, the medium-stop switching electromagnetic reversing valve, the descending switching electromagnetic reversing valve, the electromagnetic multi-way reversing valve and the lifting control valve to control the air-controlled distribution valve, the medium-stop switching electromagnetic reversing valve, the descending switching electromagnetic reversing valve, the electromagnetic multi-way reversing valve and the lifting controlvalve. The system has the beneficial effects that the tilting angle of a heavy-duty dump truck is always kept within an alarm angle range, thereby avoiding the occurrence of rollover accidents.