Abstract: In order to solve the problems of low thermal efficiency,insufficient combustion,environmental pollution,and energy waste in the traditional coal-fired hot blast stove used in the solar greenhouse,a biomass hot blast stove was developed,which uses waste biomass straw as fuel,and the overall structure is composed of storage materials System,combustion system,heat exchange system,flue dust removal system,temperature control system.Various experiments were carried out using the biomass hot blast stove in the solar greenhouse to test its thermal performance,and the influence of the heating of the biomass hot blast stove on the thermal environment and crop growth parameters of the solar greenhouse was monitored.The test results show that the heat exchange rate of the biomass hot blast stove is （6×10~5-8×10~5） kJ/h,and the heat exchange efficiency is more than 75%.Compared with ordinary coal-fired hot blast stoves,it has higher thermal efficiency,full combustion,environmental protection and saving.Significant advantages such as energy have effectively increased the air temperature,soil temperature and net photosynthetic rate in the solar greenhouse,improved the growth and development of crops in the greenhouse,and promoted the improvement of crop fruit yield and quality.