NOVELTY - Using industrial or domestic waste gas (containing carbon dioxide or standard gas of high concentration) or waste liquid or waste residue as raw material for culturing biomass (including crop), and using cultured biomass as raw material for preparing methanol, comprises e.g. taking industrial or domestic waste gas (carbon dioxide volume percent is more than 0.3% standard or exhaust gas) or waste liquid or waste residue, removing harmful component, placing in cultivating greenhouse for cultivating biomass, adjusting e.g. humidity, biological purification, using biomass as raw material.    USE - Used as industrial or domestic waste gas (containing carbon dioxide or standard gas of high concentration) or waste liquid or waste residue as raw material utilization method for culturing biomass.    ADVANTAGE - The method utilizes the waste to promote biological growth, can simultaneously purify and produce industrial raw materials, improves the utilization of solar energy to regulate temperature, humidity, illumination of plant growth, carbon dioxide concentration and nutrient liquid environment condition, achieves biological waste purification effect, and can regulate hydrogen carbon ratio by gasification. The biomass is rich in starch.    DETAILED DESCRIPTION - Using industrial or domestic waste gas (containing carbon dioxide or standard gas of high concentration) or waste liquid or waste residue as raw material for culturing biomass (including crop), and using cultured biomass as raw material for preparing methanol, comprises (a) taking industrial or domestic waste gas (carbon dioxide volume percent is more than 0.3% standard or exhaust gas) or waste liquid or waste residue (the following waste), removing part of harmful component, placing in cultivating greenhouse for cultivating biomass (including crop), (b) according to need, adjusting room temperature, humidity, gas content, illumination intensity and nutrition liquid concentration, (c) after many times, biological purification of waste, until pollutant content reaches standard, and (d) using biomass (crop) after treatment of waste as industrial raw material. INDEPENDENT CLAIMS are also included for:    (1) Using biological culture atmosphere of high concentration carbon dioxide, regulating carbon dioxide content concentration, promoting biological growth, increasing crop yield or shortening the growing season, reducing corresponding subject of plant diseases and insect pests, and the dosage of at least one pesticide;    (2) Using biological culture atmosphere of low concentration oxygen, regulating oxygen content concentration and corresponding subject of plant diseases and insect pests, reducing at least one pesticide dosage; and    (3) producing methanol, dimethyl ether, ethanol or solid fuel by greenhouse cultivated produced biomass (crop) as industrial raw material, comprising (a) carrying out gasification by heating biomass material (starch, glucose-based) in a gasification container to 400-2000 degrees C, carrying out heat decomposition or adding little gasification agent (e.g. water, oxygen or carbon dioxide) for partial oxidation, subjecting gasification gas for heat exchange according to need to obtain feed gas, (b) regulating hydrogen carbon ratio by carbon monoxide and water vapor through catalyst (iron-chromium, copper-zinc or cobalt-molybdenum) conversion reaction, also can directly inject hydrogen, adjusting hydrogen/carbon monoxide mole ratio to 1.8-3, to obtain syngas, (c) purifying by using low temperature methanol washing technology or polyethylene glycol dimethyl ether method, to remove hydrogen sulfide, carbon dioxide acidic gas, and (d) synthesizing methanol by compressing step (c) obtained synthesis gas, cooling to obtain mixed product of methyl alcohol or dimethyl ether, and using catalyst to increase production efficiency.