NOVELTY - Microorganism treatment process of printing and dyeing wastewater comprises regulating pH, hydrolyzing and acidifying, and contact-oxidizing saccharomycete organism.    USE - The method is useful for Microorganism treatment process of printing and dyeing wastewater (claimed).    DETAILED DESCRIPTION - Microorganism treatment process of printing and dyeing wastewater comprises regulating pH, hydrolyzing and acidifying, and contact-oxidizing saccharomycete organism; the method specifically comprises (a) regulating the pH of printing and dyeing wastewater at pH 9-11 by industrial waste acid; (b) performing bacterial organism contact oxidation treatment on the wastewater regulated pH and hydrolyzed and acidified, where the hydraulic residence time is 30 hours, and the reactor is filled with combined filling material and the filling rate is 30-50%; the flora employed is Microbacterium sp., Arthrobacter sp., Alishewanella sp., Paracoccus sp., Halomonas sp., Bacillus subtilis, Planococcus maritimus, Cellulosimicrobium cellulans, and Pseudomonas reactans; after amplifying and culturing the flora, it is added to the reactor for aerating hung film, after maturing, it is introduced to the yielding water hydrolyzed and acidified in small flow, and the bottom of the reactor is provided with an aerating apparatus, the aeration amount of which is 20 L/minute; and (c) performing saccharomycete organism contact oxidation treatment on the wastewater performed bacterial organism contact oxidation treatment, in which the hydraulic residence time is 30 hours, and the reactor is filled with combined filling material and the filling rate is 30-50%, and the flora employed is the following mixed decolorization saccharomycete flora: Candida boidinii, Candida ghanaensis, Candida parapsilosis, Candida tropicalis, Candida zeylanoides, Candida albicans, Candida maltos, Candida sojae, Candida oleophila, Cryptococcus albidus, Cryptococcus curvatus, Cryptococcus flavescens, Debaryomyces hansenii, Dipodascus ovetensis, Pichia guilliermondii, Pichia spartinae, Rhodotorula mucilaginosa, Rhodotorula slooffiae, Trichosporon coprophilum, and Trichosporon montevideense, the saccharomycete flora have aerating hung film in the reactor, after the hung film matures, it is introduced to the wastewater processed by the basophil flora, and the wastewater processed above reaches the emission standard.