Abstract: Abstract: The burning of fossil fuels, the changes in agricultural and land utilization, as well as the industrial processes produce a lot of carbon dioxide and other greenhouse gases causing global warming. Climate increasingly has become one of the most far-reaching global environmental issues. The carbon can be stabilized by biochar for hundreds of years while the carbon element is very difficult to break down after mineralization. With the function of carbon sequestration and soil improvement in agriculture, it turns out to be one of the main ways to reduce carbon emissions in the future. Currently, the producing of biochar has become a hot topic both at home and abroad. In this paper, aiming at the existence of unstable operations, low percentage of biochar outputs, as well as the difficultly of recycling of by-products of China biochar, equipment designs of the horizontal equipment for continuous carbonization of biomass, which uses external thermal heating carbonization of feedstock. The difference requires an external heating fuel, the heat required for the dissertation utilizes the high temperature and gas combustion-generated calorie to carbonize the raw materials., Combustion flue gas during start-up and insufficient supply combined with diesel auxiliary heating of the equipment, the pyrolytic reactor of which is double-layer structure, with the inner layer carbonization chamber equipped with the built-in screw conveyor while the out layer high-temperature flue sleeve, using the motor speed, to ensure the continuous feeding of material, mixing and uniform heat transfer to achieve a biological continuous production of charcoal and carbonization temperature-controlled. The reactor outer sleeve for the high temperature flue gas, the use of high temperature gas to heat biomass, and the outer cylinder has baffles and fins, extending the residence time of the flue gas, and increasing the heat transfer coefficient to achieve a sufficient heat exchange. The paper chooses pyrolysis parameters, thermal design and conducts gas combustion thermal calculation., The 100 kg corn stalks can be producing 30 m3 of combustion gas, completing combustion flue gas flow rate of 96.9 m3, consuming 15.3 m3/h of gas that can meet the requirements, the remaining 14.7 m3/h of gas can be used for other purposes. While the key components of the carbonization chamber, flue gas temperature structural design of the sleeve, etc., come to the heating equipment length 4.24 m, inner tube inner diameter of 0.5 m, the outer tube inner diameter of 0.55 m. Finally taking the rice hulls for the carbonization experiment, the results of which indicates that the horizontal equipment for continuous carbonization of biomass has the realization of sustainable stable operation, reasonable designing of carbonization equipment, as well as the wide range of applicability. The productivity of which is 45 kg/h, the terminal temperature of carbonization 500℃ and the ratio of char yield 42%, and taking advantage of all the by-products of carbonization, reducing pollutant emissions. With the realization of a designing goal and the improvement of biochar percentage, the dissertation provides a theoretical basis and technological support for the biochar industry of China.