NOVELTY - Biological purification of paint spraying waste gas and organic waste gas involves adding crushed plant branches, soybean sauce and activating agent to multi-salt solution, pickling, fermenting and brewing to obtain halophilic bacteria mixed flora biological bacterium solution, collecting paint spraying waste gas and organic waste gas, spray-washing halophilic bacteria mixed flora biological bacterium solution, mixing collected paint spraying waste gas and organic waste gas with spray-washed solution, and carrying out adsorption, degradation and discharging processes.    USE - Biological purification of paint spraying waste gas and organic waste gas (claimed).    ADVANTAGE - The method enables economical biological purification of paint spraying waste gas and organic waste gas by safe process. The purified product has excellent stability.    DETAILED DESCRIPTION - Biological purification of paint spraying waste gas and organic waste gas involves preparing multi-salt solution containing 1-5 wt.% sodium phosphate, 1-4 %mass sodium sulfite, 1-6 wt.% magnesium sulfate, 0.5-3 wt.% sodium chloride and 0.1-1 wt.% calcium chloride as biological bacterium solution, adding 5-15 wt.% crushed plant branches, 1-5 wt.% soybean sauce and 1-5 wt.% activating agent to multi-salt solution, pickling, fermenting and brewing for more than 10 days under the conditions that the pH is 7-11 and the temperature is 15-40 degrees C to obtain halophilic bacteria mixed flora biological bacterium solution which is used for effectively dissolving and degrading organic material at 10-40 degrees C and storing the halophilic bacteria mixed flora biological bacterium solution in a biological bacterium solution storage tank, collecting paint spraying waste gas and organic waste gas using a collection pipe, spray-washing halophilic bacteria mixed flora biological bacterium solution, mixing collected paint spraying waste gas and organic waste gas with halophilic bacteria mixed flora biological bacterium solution, and carrying out adsorption, degradation and discharging processes. The soy sauce comprises Pseudomonas, xylose, Bacillus and/or halophile.