An experimental research on the galloping properties of carbon fiber composite core without ice-covered of single span overhead line is developed by converting the wind excitation to periodic variation of the wire length. Corresponding with experimental research, a parametric resonance model of simply-supported cable structure is adopted to simulate conductor galloping induced by transverse wind load. The galloping phenomenon of aluminum cable steel reinforced and carbon fiber composite core with same cross-section dimensions and load conditions is compared and analyzed. The galloping modes for two cable systems under different exciting frequencies observed by experiment are explained from the perspective of parametric resonance dynamic instability region reasonably. The experimental results show that under the same static tension loading, compared to the traditional aluminum cable steel reinforced, carbon fiber composite core with the same cross-section size is more difficult to be galloping.