NOVELTY - A liquid product in garbage microwave cracking processing system is conveyed to pyrolysis gas condensing tower, and condensed to separate pyrolysis gas, tar and water mixture. Separated pyrolysis gas is processed. Coarse tar suspending at upper layer of tar and water mixture is conveyed to temporary storing tank, and sewage at lower layer of mixture is conveyed to sewage processing system. Coarse tar is subjected to primary, secondary and tertiary distillation, and processed in purifying tower to obtain purified fuel oil. Thus, processing of liquid product is enabled.    USE - Processing of liquid product in garbage microwave cracking processing system.    ADVANTAGE - The liquid product is efficiently and safely processed.    DETAILED DESCRIPTION - A liquid product in garbage microwave cracking processing system is conveyed to a pyrolysis gas condensing tower, and condensed to separate pyrolysis gas, tar and water mixture. The separated pyrolysis gas is processed. The coarse tar suspending at upper layer of tar and water mixture is conveyed to coarse tar temporary storing tank, and sewage at the lower layer of mixture is conveyed to a sewage processing system. The coarse tar is primarily distilled, and distilled light oil is conveyed to an oil-water separator. Hydrogen or deodorizer antioxidant is added to separated light oil, and separated coking sewage is conveyed to the sewage processing system. The substance, which is not distilled in primary distillation is distilled to obtain fuel oil containing residue. The resulting product is processed in the purifying and regulating tower by adding deodorizer antioxidant to obtain purified fuel oil. The substance, which is not distilled in secondary distillation is further distilled to obtain fuel oil containing residue. The resulting substance is processed in the purifying and regulating tower by adding deodorizer antioxidant to obtain the secondary purified fuel oil. Thus, processing of liquid product in garbage microwave cracking processing system is enabled. An INDEPENDENT CLAIM is included for distillation device.