In order to study the aerodynamic characteristics of cyclorotor in hovering, the accuracy of the calculation method applied to the aerodynamics calculation was verified with an example. Then, the aerodynamic parameters of cyclorotor with different radia, chord and number of blades were studied, and the aerodynamic interfere of cyclorotor with different distances was calculated and analyzed. The results have shown that with the increase of radius, the aerodynamics and the load per unit area of the blade increase; the larger the chord, the larger the aerodynamics, the smaller the load per unit area of the blade; the aerodynamics generated by the 4-blade cyclorotor is larger than that of 3-blade cyclorotor and 6-blade cyclorotor, while the blade load of 3-blade cyclorotor is the largest; the resultant deflection angle decreases with the increase of the rotational speed and the solidity respectively; with the increase of the distance among the cyclorotors, the aerodynamic loss coefficient and the resultant force deflection angle are decreased.