The invention discloses a method for treating oil sludge waste by utilizing a power station boiler. The method comprises the following steps that the oil sludge hazardous waste to be treated is sent into an oil sludge storage tank for storage; the oil sludge hazardous waste falls into a roller filter from the oil sludge storage tank; the roller filter rotates to drive the oil sludge hazardous waste in the roller filter to roll, the liquid and small particle components in the oil sludge hazardous waste fall into an filtrated oil sludge tank body on the bottom of the roller filter through the sieve holes, and the large particle components in the oil sludge hazardous waste fall into an impurity tank at the bottom end of the roller filter; the combustible gas generated in the oil sludge hazardous waste heating process is pumped and sent into the boiler to be combusted; the filtered oil sludge hazardous waste in the oil sludge tank is conveyed to a boiler fuel nozzle through a pipeline andis sprayed into the boiler to be combusted; and the large-particle impurities in the impurity tank are pre-mixed with raw coal and then are fed into a coal grinding machine to be ground into powders and the powders are fed into the boiler for combustion. According to the method, the oil sludge hazardous waste is filtered and correspondingly treated, and put into the boiler to be combusted, so thatthe oil sludge hazardous waste can be treated, no dioxin and other wastes are generated, moreover, the heat of the oil sludge hazardous waste can be utilized, the implementation process is simple andconvenient, and the initial investment is small.