In view of the poor economic efficiency, single energy utilization method, and incomplete monitoring system function of small-scaled photovoltaic micro-grid system due to the restriction of investment cost, a simple improvement scheme is designed on the basis of photovoltaic-photothermal integration (photovoltaic-photothermal, PVPT or PV/T) technology, and the feasibility of hybrid control method based on the temperature-power relation of front-end components is discussed on this basis. The overall economic benefits of small-scale photovoltaic micro-grid system can be comprehensively improved through utilizing the strengths of PVPT principle. The experimental result shows that the improvement scheme can validly increase the power generation efficiency of the system, as well as enrich the luminous energy utilization methods of the users. The mixed temperature power control method based on such improvement scheme demonstrates a smooth regulation process and smaller regulation interval, and can be used for the backup control and fine control of small-scaled photovoltaic micro-grid system. Since such improvement method is low in cost and simple in structure, it meets the operation characteristic requirements of small-scaled photovoltaic micro-grid system, and possesses certain application potential. This work is supported by National Natural Science Foundation of China (No. 61571189) and 111 Project of State Administration of Foreign Experts (No. B13009).