Method for preparing high-octane-value gasoline and propylene from inferior raw oil

A method for preparing high-octane-value gasoline and propylene from inferior raw oil is disclosed. The inferior raw oil successively enters a first reaction zone and a second reaction zone of a catalytic conversion reactor and is contacted with a catalytic conversion catalyst, a first reaction and a second reaction are respectively generated, moderate catalytic cracking is carried out, and the cracking reaction product is separated to obtain propylene, high-octane-value gasoline, catalytic wax oil and other products; the catalytic wax oil is subjected to solvent deasphalting and then is filtered or is subjected to adsorption deasphalting, and then enters a hydrotreating device to obtain a hydrogenated catalytic wax oil; the hydrogenated catalytic wax oil is cycled to the first reaction zone of the catalytic conversion reactor or/and other catalytic conversion devices and is further subjected to a reaction to obtain the target products of the high-octane-value gasoline and propylene. The method can convert the inferior raw oil into the high-octane-value gasoline and propylene, at the same time, not only greatly reduces the yield of dry gas and carbon coke, but also realizes long-period production of hydrogenation of the catalytic wax oil and efficient utilization of petroleum resources.