In view of the technical problems such as low viscosity，poor temperature resistance and difficulty in carrying sand in cellulose fracturing fluid，nano hybrid cellulose fracturing fluid（cellulose nano fracturing fluid for short）was prepared by adding cellulose nanocrystals （CNCs） into cellulose fracturing fluid. The dosages of compound crosslinking agent composed of triethanolamine and zirconium butanol and CNCs were optimized. The shear process of cellulose nano fracturing fluid gel in pipeline was simulated by rheometer. The effects of shear rate and temperature on the rheological properties of cellulose nano fracturing fluid gel were studied. The results showed that adding 1000 mg/L CNCs into cellulose fracturing fluid gel could significantly improve the viscosity of fracturing fluid. When the amount of compound crosslinking agent was 0.4%，the viscosity of cellulose nano fracturing fluid gel could reach 600 mPa· s at 25 ℃ and 170 s-1，which was higher than that of blank fracturing fluid gel by 160 mPa· s. After shearing at 120 ℃ and 170 s-1 for 60 min，the viscosity could reach 170 mPa· s and the viscosity increment was 70 mPa· s. CNCs could significantly improve the sand carrying capacity of cellulose fracturing fluid gel. At 25 ℃，the elastic modulus of cellulose nano fracturing fluid was twice bigger than that of blank fracturing fluid gel. CNCs dispersed in the cellulose grid，which could effectively improve the shear resistance and temperature resistance.