The utility model relates to a catalytic slurry oil filter device. A catalytic slurry oil delivery pipe is connected with a cyclone inlet, a cyclone upflow outlet is connected with a filter inlet through a pipe, and a cyclone underflow outlet is connected with a slurry tank inlet through the pipe; a filter upflow outlet is connected with an oil storage tank through a purified oil delivery pipe, a filter underflow outlet is connected with the slurry tank inlet through the pipe; and a slurry tank underflow outlet is connected with a slurry pump inlet through the pipe, and a slurry pump outlet is connected with a catalytic riser tube or a stock tank through a slurry delivery pipe. In the utility model, catalytic slurry oil of the heavy oil is firstly pretreated through a cyclone to reduce the content of catalyst granules, colloid and asphaltine in the slurry oil, and the slurry oil containing the solid catalyst granules is effectively filtered through the filter to realize the filtration efficiency of over 95 percent; and therefore, the raw slurry oil only used as the fuel oil can be used as the raw material for producing carbon black, needle coke, carbon fiber and other chemical products after being purified, so that the comprehensive utilization value of the raw slurry oil is promoted.