The invention provides a combined cycle and straight condensing thermal power combined dispatching system and method, comprising a gas-heating boiler and gas combined cycle, a straight condensing thermal power unit, an air conditioner heat pump, an electric energy meter, a heat radiator, a heat consumption meter, a first remote centralized controller, a second remote centralized controller, a third remote centralized controller and a dispatching control device, wherein the second remote centralized controllers acquires the power consumption data detected by the electric energy meter and the heating consumption data detected by the heat consumption meter, and the dispatching control device controls the operation of the gas-heating boiler and gas combined cycle, the straight condensing type thermal power unit, the air conditioner heat pump and the heat radiator through the first, second and third remote centralized controllers. By acquiring the pipeline distance between a user and the heat source, the combined cycle and straight condensing thermal power combined dispatching system reasonably performs combined dispatching on the originally independently operating straight condensing thermal power unit and the gas-heating boiler and gas combined cycle by using the pipeline distance, effectively reduces the total energy consumption of the gas-heating boiler and gas combined cycle and the straight condensing thermal power unit, avoids waste of fuel resources and simultaneously causes dispatching to be more timely and accurate.