TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred Components: Alternatively, the system for poly-generation treatment of garbage biomass including indirect liquefying technique of garbage, biomass, and coal comprises feeder (6), gas phase circular gasification furnace (7), smoke circling wind pipe (8), smoke circling blower (9), waste heat boiler (12), exhaust gas suction fan (13), purifying tower (14), carbon dioxide absorption tower (15), synthesis reactor (16), separating column (18), and tank (21); where the feeder (6) comprises hopper (4), discharge port of the feeder (6) is connected with feeding port of the gas phase circular gasification furnace (7), steam outlet of the gas phase circular gasification furnace (7) is connected with inlet scoop of the smoke circling blower (9) through the smoke circling wind pipe (8), air outlet of the smoke circling blower (9) is connected with the oxidizing region of the gas phase circular gasification furnace (7), synthesized gas outlet of the gas phase circular gasification furnace (7) is connected with the waste heat boiler (12), the waste heat boiler (12) is connected with inlet scoop of the exhaust gas suction fan (13) by pipe, air outlet of the exhaust gas suction fan (13) is connected with the purifying tower (14), the purifying tower (14) is connected with inlet of carbon dioxide absorption tower (15), synthesized gas outlet of the carbon dioxide absorption tower (15) is connected with raw gas inlet of the synthesis reactor (16), mixture outlet of the synthesis reactor (16) is connected with inlet of separating column (18), product outlet of the separating column (18) is connected with the tank (21), and unreacted matter outlet of the separating column (18) is connected with inlet port of the synthesis reactor (16). In the system for poly-generation treatment of garbage biomass including gasification technique of garbage, biomass, and coal, carbon monoxide shift reactor (44), carbon dioxide absorption tower (15), and purifying device (45) are between the purifying tower (14) and compressor (19). In the system for poly-generation treatment of garbage biomass including indirect liquefying technique of garbage, biomass, and coal, the compressor (19) and cooler (20) are between the separating column (18) and the tank (21); the carbon monoxide shift reactor (44) is between the purifying tower (14) and carbon dioxide absorption tower (15).