In order to explore the hydrodynamic performance and anti-cavitation performance of the symmetrical airfoil rotor of the channel propeller, based on the CFD method, combined with the RANS equation, the SST K-Ω turbulence model and the Schnerr-Sauer cavitation model are used to study the open water performance and cavitation performance in the mooring state. The research shows that based on the modified rotor profile airfoil of NACA66 airfoil, by optimizing the relevant rotor parameters such as rotor pitch angle, chord length distribution and skew angle, the errors of related hydrodynamic parameters such as forward and reverse thrust, torque and power are within 3% under open water conditions of mooring conditions. Compared with the rotor cavitation phenomenon under open water condition and actual condition, the rotor cavitation area is generally small. Especially when the propeller is placed in the channel, the rotor cavitation area is greatly reduced compared with the open water condition, and the tip vortex cavitation is effectively suppressed, which greatly delays the occurrence of tip vortex cavitation.