The invention discloses a dry-process desulfuration fuzzy control method for a boiler of a coal slime fluidized bed. SO2 emission concentration cannot be stable or reach the standard in an existing manual control mode or a common PID (proportion integration differentiation) manner, and efficiency loss of a boiler is greatly affected. The dry-process desulfuration fuzzy control method includes firstly, mining basic characteristics of a system according to real-time data in a combustion desulfurization process of the boiler of the coal slime fluidized bed so as to build a process model; secondly, formulating a fuzzy control rule according to fuzzy control experiences of an expert, designing a fuzzy controller, adding an integration element to realize indifference tracking of control according to characteristics of fuzzy control; and finally, adding an optimum feedforward link for suppressing turbulence according to the characteristics that load change is high in a combustion process of coal slime and the quantity of the coal slime is adjusted according to steam load and the temperature of the bed. The dry-process desulfuration fuzzy control method overcomes shortcomings of a traditional control mode, has excellent control precision and stability, controls desulfurization emission indexes, and obviously reduces influences to utilization of a desulfurizing agent and thermal loss of the boiler.