The development of non-blast furnace ironmaking technology under the background of carbon peaking and carbon neutrality has become an important part of low-carbon metallurgy. Biomass is a renewable energy rich in C and H elements，and it is of great practical significance to further reduce carbon emissions and promote the development of carbon- containing pellets technology after carbonization treatment as a substitute raw material for carbon-containing pellets in rotary hearth furnaces. In this paper，three kinds of biochar including walnut shell，melon seed shell and peanut shell，are selected as reducing agents to prepare carbon-containing pellets，and the effects of carbon type，temperature and time on the reduction process and dynamics of carbon-containing pellets are studied，and the dynamics constraints of the reduction process are determined. The results show that temperature has a significant impact on the reduction of carbonaceous pellets in biomass，and increasing the temperature can effectively promote iron oxide reduction. The peanut shell pyrolytic carbon has a loose texture and a large specific surface area. This structural characteristic shows good reduction performance. The pellets prepared from the biomass are reduced at 1 100 °C for 20 min and the reaction fraction can reach to 86. 61%. The diffusion process is the limiting link in the reduction process of carbon-containing pellets in peanut shell，and its apparent activation energy is 63. 886 kJ/ mol. This study will provide a theoretical basis and technical support for the practical application of biomass carbon-containing pellets.