NOVELTY - Kitchen waste grease is biologically degraded by (A) performing domestication process to kitchen waste, (B) cultivating base plate, (C) inoculating culture medium, (D) obtaining bacterial liquid, and (E) performing fermentation. The step (A) comprises collecting kitchen waste from ground, filling kitchen garbage into bead filled in sterile water for 1-2 hours, obtaining bacterial solution; and adding bacterium liquid to liquid in domestication culture at 32 degrees C. The step (E) comprises drying at 105 degrees C solid kitchen waste powder, adding bacterial liquid and adding wettability powder.    USE - Method for biological degrading of kitchen waste grease (claimed) used for breeding culture medium.    ADVANTAGE - The method has high efficiency.    DETAILED DESCRIPTION - Kitchen waste grease is biologically degraded by (A) performing domestication process to kitchen waste, (B) cultivating base plate, (C) inoculating culture medium, (D) obtaining bacterial liquid, and (E) performing fermentation. The step (A) comprises collecting kitchen waste from ground, filling kitchen garbage into bead filled in sterile water for 1-2 hours, obtaining bacterial solution; and adding bacterium liquid to liquid in domestication culture at 32 degrees C, 180 revolutions/minute, and switching 10 ml culture to 30 mL liquid domestication culture group every 7 days, where domestication process lasts for 2 months. The step (B) comprises cultivating base plate to primary sieve at 32 degrees C for 48 hours, and selecting hydrolysis ring diameter of more than 15 mm colony into screening. The step (C) comprises selecting single colony and colony respectively inoculated shaking bottle culture medium to screening at 180 rpm and 32 degrees C for 72 hours, measuring screening shaking bottle culture medium of change, and selecting amplitude content of largest single colony or one group of compound colony for grease degrading kitchen waste. The step (E) comprises: (i) floating on water in solid kitchen waste sieve mesh for kitchen waste oil on water surface to ether or petroleum ether; (ii) taking bacterium liquid each basic fermentation culture medium and adding kitchen waste oil (400 mg) and bacterial liquid (6 mL); (iii) regulating pH value of initial mixture to 7-8, and adding each basic fermentation culture medium in amount of 600-800 mg of Tween 80 (RTM: polyoxyethylene (20) sorbitan monooleate) at 30-35 degrees C; (iv) performing shaking culture at 170-200 rpm for at least 72 hours after water washing solid kitchen waste; and (v) drying at 105 degrees C solid kitchen waste powder, adding bacterial liquid to solid kitchen waste powder humidity (50-80%), and adding distilled water wettability powder for at least 7 days.