At present, fracturing is an important measure to increase production and increase injection of oil and gas fields. The return fluid generated after operation has become one of the important control pollutants for the environmental protection of oil and gas fields, re-use of fracturing fluid backwaters has become an important development direction of wastewater resource utilization. In this paper, four different objects of distilled water, tap water, No.6 simulated water and treated backflow liquid were studied. The viscosity, temperature resis-tance and shear resistance of the fracturing fluid base fluids were analyzed under Boron con-centrations of four water solvents with different concentration gradients.The results show that Boron has no effect on the viscosity, temperature resistance and shear resistance of the fluid at 1 mg/L in distilled water. When the concentration of Boron in tap water is 2 mg/L, it has no effect on the viscosity,temperature resistance and shear resistance of the fracturing fluid, which accords with the performance index of fracturing fluid.When Boron is 12 mg/L in No. 6 simulated water and 20 mg/L in liquid medium after treatment, the viscosity of base fluid has no effect on the viscosity of base fluid. However, when Boron is not added, the tempera-ture tolerance of the two solvents corresponding to the fracturing fluid is 60℃.Anti-temper-ature shear resistance can only maintain 2 min,poor performance.