The present invention discloses process and special bacterial colony for degrading organic phenol matter. Mixed bacterial colony, MY9 CGMCC No. 1893, containing methylosinus trichosporium is inoculated to organic phenol matter liquid to be degraded, and cultured in sealed mixed gas environment containing methane and air. The process of degrading organic phenol matter utilizes the synergistic metabolic action of methane oxidizing bacteria and other microbes in the said mixed bacterial colony in degrading organic phenol pollutant, and has mild reaction condition and high efficiency.