Effectively decreasing induced drag can be significant for the aircraft to reduce the fuel consumption and increase the flight range. Numerical simulation with CFD methods were carried out to obtain the aerodynamic characteristics, especially the drag reduction effect of the fuselage and wing configuration with the fusion winglet. The results showed that tip vortex was decreased and drag coefficient was obviously reduced. The bending moment coefficient can be increased by 3.2% and drag coefficient can be decreased by 4.2% when specifying the lift coefficient to be 0.5.