The catalytic cracking performances of several propane deasphalted oil obtained in our earlier work were investigated in a fixed fluidized bed reactor at the reaction temperature of 490 ℃, catalyst to oil mass ratio of 5 (catalysts 80 g) and space velocity of 15 h ^-1. It was found that the propane deasphalting oil with the highest saturated fraction mass fraction of vacuum residuum was a good FCC feedstock. the product distribution and selectivity of the deasphalted oil from vacuum residuum blending FCC slurry oil were better than that from FCC slurry oil. But for the deasphalted oil from FCC, slurry oil had lower conversion and light oil yield, and the cracking performance was also poor.