Introduction  In recent years， the problem of municipal garbage in China has become increasingly prominent， the grate furnace waste power plant has been developed rapidly in China.

  Method  Based on previous engineering experience at the 850 t/d project， this paper introduced the main process systems of grate furnace garbage power station， including fuel supply system， combustion system， steam water system， flue gas purification system， ash removal system， etc.

  Result  This paper analyzes and discusses the determination of fuel calorific value， the size of garbage pool， the selection of driving specifications， the selection of grate furnace inlet， primary air， secondary air， starting combustion， auxiliary combustion， steam-water system parameters， and the setting of treatment systems for dust， NO_x， dioxin， heavy metals and acidic pollutants in flue gas. The advantages and disadvantages of SNCR and SCR processes in NO_x removal methods， dioxin removal methods， dry， semi-dry and wet systems for acid pollutant removal are compared and explained The layout of the main building in typical engineering cases is briefly explained.

  Conclusion  It can be used for reference in engineering design， parameter selection， system design and layout optimization of similar projects.