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According to the demands of greenhouse environmental conditions, this paper examines a solid fuel burning stove applied to compression molding of biomass in order to solve the issues which temperature is too low in greenhouses in winter north of China and carbon dioxide concentration is too low caused by insufficient ventilation number. The burning stove designed with big furnace, no grate and recalculated secondary air. Fuel utilization was improved in the largest degree in this design. Feed amount, feed rate and time are controlled by the PLC system which is adopted to make fuel fully burning, low pollution emissions and more automation. The temperature field and gas flow field changes is simulated by the FLUENT. The temperature of various sections and the formation of nitrogen oxides is reduced by the special design when burning. Experiment shows that sulfur dioxide concentration is about 0.41mg/m3, nitrogen dioxide is about 0.498mg/m3 which have no effect in growth and development of crops. This paper provides theoretic guidance for improving greenhouse conditions.