NOVELTY - Refining organic domestic waste raw fuel oil includes thermally decomposing organic garbage into reaction kettle in the presence of catalyst to obtain coke residue, fuel oil, and mixed oil and gas, discharging coke residue into gasification furnace, and sending mixed oil and gas into purification tower; separating dust from mixed oil and gas, entering mixed oil and gas into catalytic column for purification, and feeding separated into gasifier; and gasifying coke residue from reaction kettle and dust from purification tower to obtain fuel oil and water mixture, and combustible gas.    USE - Method for refining organic domestic waste raw fuel oil (claimed).    ADVANTAGE - The method is suitable for large scale production, and has no solid waste, low secondary pollution, low waste treatment cost, and simple process.    DETAILED DESCRIPTION - Refining organic domestic waste raw fuel oil comprises thermally decomposing organic garbage into reaction kettle in the presence of catalyst at 300-400 degrees C and atmospheric pressure to obtain coke residue, fuel oil, and mixed oil and gas, discharging coke residue into gasification furnace, and sending mixed oil and gas into purification tower, where catalyst comprises 25-35 wt.% calcium oxide (CaO), 25-35 wt.% aluminum oxide (Al2O3), 25-15 wt.% silicon monoxide (SiO), 15-25 wt.% artificial zeolite, and 5-25 wt.% water; separating dust from mixed oil and gas, entering mixed oil and gas into catalytic column for purification, and feeding separated into gasifier; gasifying coke residue from reaction kettle and dust from purification tower to obtain fuel oil and water mixture, and combustible gas, sending combustible gas into combustion reactor, and separating fuel oil and water, where gasifier is filled with catalyst comprising 45-55 wt.% CaO, 5-15 wt.% Al2O3, 25-35 wt.% iron, and 5-15 wt.% water; catalytically decomposing oil and gas from catalytic purification tower, converting part of mixture into water and oil mixture, separating into wastewater and fuel oil, sending remaining part of oil and gas mixture into first condensing tower, where catalytic tower is filled with catalyst comprising 35-45 wt.% CaO, 5-15 wt.% Al2O3, 15-25 wt.% SiO, 15-25 wt.% low-temperature coke, and 5-15 wt.% water; condensing oil and gas mixture into oil and water mixture, oil-water separating into wastewater and fuel oil, returning remaining condensate into reaction kettle combustion device to supply heat; collecting fuel oil from reaction kettle, gasification furnace, catalytic tower, and first condensing tower, catalytically reforming at 200-300 degrees C to obtain mixed oil and gas, and sending to second condensing column, where catalyst comprises 5-15 wt.% trisodium phosphate, 65-80 wt.% magnesium trisilicate, and 5-20 wt.% artificial zeolite; condensing part of oil and gas mixture into water and oil mixture, separating into wastewater and fuel oil, sending remaining condensate to catalytic combustion reforming unit to supply heat; and filtering separated oil; separating dust from mixed oil and gas, entering mixed oil and gas into catalytic column for purification, and feeding separated into gasifier; gasifying coke residue from reaction kettle and dust from purification tower to obtain fuel oil and water mixture, and combustible gas, sending combustible gas into combustion reactor, and separating fuel oil and water, where gasifier is filled with catalyst comprising 45-55 wt.% CaO, 5-15 wt.% Al2O3, 25-35 wt.% iron, and 5-15 wt.% water; catalytically decomposing oil and gas from catalytic purification tower, converting part of mixture into water and oil mixture, separating into wastewater and fuel oil, sending remaining part of oil and gas mixture into first condensing tower, where catalytic tower is filled with catalyst comprising 35-45 wt.% CaO, 5-15 wt.% Al2O3, 15-25 wt.% SiO, 15-25 wt.% low-temperature coke, and 5-15 wt.% water; condensing oil and gas mixture into oil and water mixture, oil-water separating into wastewater and fuel oil, returning remaining condensate into reaction kettle combustion device to supply heat; collecting fuel oil from reaction kettle, gasification furnace, catalytic tower, and first condensing tower, catalytically reforming at 200-300 degrees C to obtain mixed oil and gas, and sending to second condensing column, where catalyst comprises 5-15 wt.% trisodium phosphate, 65-80 wt.% magnesium trisilicate, and 5-20 wt.% artificial zeolite; condensing part of oil and gas mixture into water and oil mixture, separating into wastewater and fuel oil, sending remaining condensate to catalytic combustion reforming unit to supply heat; and filtering separated oil. An INDEPENDENT CLAIM is included for refining device comprising reaction kettle, gasification furnace, purification tower, first oil-water separator, catalytic tower, first condensing tower, catalytic reforming tower, second condensing tower, second oil-water separator, and filter. The reaction kettle is set with an air outlet, coke residue outlet, fuel oil outlet, and combustion device. The outlet of reaction kettle is connected to coke residue gasification furnace through pipeline. The purification tower is connected to catalytic tower through guide air pipe. The catalytic tower is connected to first condensing tower. The gasification furnace, catalytic tower and first condensing tower are respectively connected with first oil-water separator.