a system for producing oil from waste material includes a catalytic decomposition reactor providing a stirrer for stirring at least one kind of raw material ; the raw material being selected from a group consisting of lingo cellulosic hydrocarbon , biomass like marine plants , waste plastic , waste , waste oil , rdf and rpf , and a catalyst for decomposing the selected raw materials ; the catalytic decomposition reactor serving for decomposing the raw materials and producing vapor and gaseous oil and sludge ; a condenser for condensing the gaseous oil generated from the catalytic decomposition reactor ; a storing container for storing oil condensed from the condenser ; and a distillation tower oil from the storing container by heat from a steam boiler and collecting heavy oil , diesel oil and gasoline through a heavy oil output port , a diesel output port and a gasoline output port in boiling points .