Abstract: In this paper, it is shown that the aberration angles of Itype cometary tails do not have a clear change with the heliocentric distance, but they have a slow change with the solar latitude. It is also shown that the change of aberration angles with the tangential velocity of comets can be expressed by a monotonic, ascendant, relevant curve. Thus, it is further tested and verified that the dynamical aberration mechanism is a main reason for the formation of aberration angles.In addition, a further analysis by which the features of the velocity field of solar winds are discussed is presented. It is pointed out that the correlation of the average velocity of the solar wind with the heliocentric distance is weak, but the average velocity correlates to the solar latitude. Atrend which shows that the average velocity of solar winds strengthens slowly with the solar latitude is given in the paper.