The pilot scale experiment on sawdust oxygen rich gasification in a bubbling fluidized gasifier was carried out.The influence of the different aperture ratio of the air distribution plate and bed material particle size and height of bed material and minimum fluidization velocity and gasification medium was studied.The results showed that the wind distribution effect of the air distribution plate(Ф2mm-0.5%)was good; the fluidization effect of bed material particle size of 0.18-0.25mm quartz sand and bed material height of 140mm took on more ideal; the minimum fluidization velocity was influenced by the bed material size and heating rate; the preliminary test measured,the calorific value is 9.6MJ·m-3 when Oxygen concentration is 50%.