The invention discloses a heat-conduction oil cyclic heating system based on alcohol fuel. The heat-conduction oil cyclic heating system comprises a flue gas heating furnace body, a flame heating furnace body and a heat using equipment. The cold oil outlet end of the heat using equipment is connected with the oil inlet end of the flue gas heating furnace body through a first heat-conduction oil pipe in a communicating mode. The oil outlet end of the flue gas heating furnace body is connected with the oil inlet end of the flame heating furnace body through a second heat-conduction oil pipe in acommunicating mode. The hot oil outlet end of the flame heating furnace body is connected with the hot oil inlet end of the heat using equipment through a third heat-conduction oil pipe in a communicating mode. A cycle pump is arranged on the second heat-conduction oil pipe. The heat-conduction oil cyclic heating system can be suitable for liquid fuel, and the number of utilizing occasions of renewable liquid energy resources of liquid is increased; by utilizing a transition flue gas pipe structure, flue gas waste heat is fully utilized, and energy resources are saved; and meanwhile a first furnace core, a second furnace core, a third furnace core and a fourth furnace core are each of a hollow heat-resistant thin-walled structure and are all full of flowing oil.