According to the basic principles of fluid mechanics,the external flow field model of high-frequency excitation deicing of ice-covered wire was established by the finite element analysis software ANSYS. The distribution law of surrounding air flow field, and pressure field and the difference of convective heat transfer on the surface of the ice-covered wire were obtained during high-frequency excitation deicing of ice-covered wire. The influencing factors of heat loss and convective heat transfer are analyzed during high-frequency excitation deicing. The electromagnetic and thermal analysis are carried out using the finite element software ANSYS, which reveals that the process of high-frequency excitation ice-melting process is uneven and asymmetric ice-melting. The pressure on the windward side is large, the temperature is low, the pressure on the leeward side is small, and the temperature is high. It indicates that the uneven convective heat transfer makes the leeward side of the ice-covered wire to melt first, and then melt toward the windward side. Under the conditions of constant ambient temperature and ice thickness, the external surface temperature of the ice-covered wire decreases with the increase of the convective heat transfer coefficient.