Abstract: To analyze the galloping characteristics of catenary multi-span positive feeder in gale areas, the positive feeder of Lanzhou-Urumqi high-speed railway is taken as the research object, a 3D finite element model is built and the accuracy of the model is verified. Considering the influence of the degree of freedom of suspension clamp on conductor galloping, the aerodynamic characteristic is studied by using the aerodynamic theory, and the stochastic wind field is simulated by the Davenport function. The amplitude frequency characteristics of single span and multi-span positive feeder galloping are compared and analyzed, and the condition that only one of the multi-span positive feeders meets galloping condition is studied. The results show that, under the same wind speed, when the wind speed is greater than 10 m/s, the galloping amplitude and average stress of multi-span positive feeder are greater than those of single span. The horizontal galloping amplitude of single span and multi-span positive feeders with wind speed less than or equal to 15 m/s is greater than that in the vertical direction. When the wind speed is greater than 20 m/s, the galloping amplitude of positive feeder decreases. There are two half waves in the galloping mode of multi-span positive feeder. At the same time, due to the influence of the degree of freedom of suspension clamp, there is a galloping wave transmission phenomenon between adjacent span positive feeders and the conductor is prone to galloping due to the influence of adjacent span galloping wave. This study can more comprehensively and deeply reveal the galloping mechanism of the positive feeders and provide theoretical support for the prevention of positive feeder galloping on site.