The 10kW solid oxide fuel cell cogeneration system is divided into a reforming hydrogen unit and a combined heat and power unit. The reforming hydrogen unit uses natural gas as feedstock to produce a highly concentrated hydrogen mixture through reforming reaction. The cogeneration unit integrates a solid oxide fuel cell, thermal management system and control system to achieve energy utilization efficiency of up to 90%. This distributed cogeneration technology is one of the most effective ways to resolve the conflict between energy demand and environmental protection.