Abstract: High concentration photovoltaic equipped with water cooling, have great potential in achieving cost-effective and clean electricity generation at utility scale, so a point-focus Fresnel high concentrating photovoltaic/thermal (PV/T) system with active cooling methods were proposed in this paper. The device consists of Fresnel lens, dual-axis tracking system, water circulation system, data acquisition system and support structure. An active thermal circulation with coolant fluid can enable heat transfer from the central receiver to a thermal load so that the dissipated heat is collected as usable energy. Water is used as the cooling fluid in the microchannel radiator. The dual-axis tracking system ensures that the high concentrating PV/T array tracks the sun accurately and the inverter helps to output electrical power at the maximum power point. The cooling water flows into the radiator from the water inlet, the GaAs battery is cooled, and the water flows back to the cooling water tank to realize the circulation. The influence factors on the thermoelectric performance of the system were investigated, including the direct irradiance of the sun, the assembly distance between the concentrating elements, the incident angle of the sunlight and the flow rate of the working water. The results showed that the temperature of the surface of the battery was decreased with the flow rate of the cooling water when the flow rate was below to the limit value, while it decreased at a slower rate with the increase of flow rate when the flow rate was higher than the limit value. The power and electrical efficiency were dropped to 0.98 W and 7.4 percent point, respectively, when the distance between the Fresnel lens and the 2nd/3rd stage concentrators was increased by 2 mm, and the direct normal irradiance value was 226 W/m2. Meanwhile, output powers of two experimental instruments were added with the increasing of irradiance, while the difference performance of the instruments was observed clearly. Therefore, it is essential to gain an optimal concentrating element assembly parameter range for the certain Fresnel high concentrating PV/T system. The heat absorption was decreased about 0.25 MJ with the incident angle increased from 0° to 1° and the output power was declined to 6.35 W when the irradiance was 500 W/m2. Direct normal irradiance was an important characterization factor affecting the thermal and electricity output. The results indicated that when the direct normal irradiance value was 850 W/m2, the highest photovoltaic efficiency value was 26% and the instantaneous thermal efficiency could be achieved to 35% at the same time, which meant the total solar energy conversion efficiency of the high concentrating PV/T system was more than 60%. The real-time electric efficiency of the system was consistent with the trend of direct normal irradiance. Power and electrical efficiency and the output characteristics of the system in the experiment were stable through analyzing errors of direct normal irradiance. The results obtained from this paper are also suitable for the large systems due to the experimental system was consisted with 12 modules. The results provide a reference for adjusting the inlet parameters of the heat exchanger during the actual operation of the Fresnel high concentrating PV/T system.