Utilization of low-grade iron ore in the production of pellets is of great significance for reducing the production cost of blast furnaces with high-proportion pellets. By appropriate beneficiation, the iron grade of boron-bearing ore can exceed 50%, which is suitable for the production of pellets. In this study, the boron-bearing iron ore pellets were selected as the research object, and the reduction behavior as well as the kinetics of pellets under CO atmosphere were experimentally investigated. Simultaneously, the mechanism for the reduction process was elucidated. Meanwhile, the difference of pellets reduction behavior between the CO atmosphere and the H2 atmosphere was revealed. The results demonstrated that as the reduction temperature rose from 700℃ to 950℃, the final reduction degree of pellets under CO atmosphere was enhanced from 26.85% to 53.56%. Simultaneously, the variation in the reduction rate of pellets depended on the temperature. At low temperature (700~800℃), the reduction rate of pellets was firstly increased and then decreased, and the maximum value was reached at (60~80) min. Furthermore, at high temperature (850~950℃), the reduction rate was rapidly boosted to the maximum value at the initial reaction stage (within 10 min), and followed by a decreasing trend. Meanwhile, under the same reduction conditions, the reduction degree of pellets under H2 atmosphere was significantly greater than that under CO atmosphere. In addition, the reduction process of boron-bearing iron ore pellets under CO can be well described by f(x)=3(1-x)2/3. Based on this model, the apparent activation energy and pre-exponential factor were calculated, which were 29.2953 kJ/mol and 0.028629 ?min-1, respectively. This work could provide theoretical foundation and data support for the application of boron-bearing iron ore in the production of pellets.