The invention relates to a distributed type energy system based on demand side energy supply and a control method. The problems that the demand side and the supply side are not matched, and the energyutilization rate at the energy supply valley is low exist in a distributed type energy system, and the overall system energy efficiency is influenced. The distributed type energy system comprises a demand side, prime mover equipment, waste heat refrigeration/heating equipment, waste heat power generation equipment, a smoke flow distributing device, a main control system, a smoke flow distributingcontrol line, a prime mover control line and an energy demand feedback line. The main control system is connected with the prime mover equipment. The prime mover equipment is connected with the smokeflow distributing device. The main control system is connected with the smoke flow distributing device. The smoke flow distributing device is connected with the waste heat refrigeration/heating equipment and the waste heat power generation equipment. The waste heat refrigeration/heating equipment and the waste heat power generation equipment are both connected with the energy demand side, and theenergy demand side is connected with the main control system. According to the distributed type energy system based on demand side energy supply and the control method, the energy supply quantity ismatched with the energy demand quantity, and the energy utilization rate is increased.