Based on the analysis of features, advantages and disadvantages of crushed coal pressurized slag gasification and space furnace pulverized coal gasification integrated process in coal gasification in China, combined with coal gasification project, different gasification technology plans were compared from technical indicators, consumption process, coal consumption, water consumption and investment returns. The result showed that combination of gasification 12∶8 with less investment and good benefit, could make up the disadvantages of the two gasification technology above, balance the pulverized coal ratio, improve utilization rate of raw materials and energy conversion, reduce the discharge of wasted water and gas and provide basis for coal gasification project development.