In recent years,the domestic pure burning biomass fluidized bed boiler developed rapidly.But many specific trial operation problems are exposed,impacts on boiler operation on schedule.Take a Biomass Power Generation Project(1 ×30MW)of 5X130-SM1-type high-temperature high-pressure biomass CFB boiler as an example,the main problems of the boiler combustion system before production,such as:back feeder blocking,bed material fluidization,burner over-temperature damage,etc.,for analysis,introduced the solution.