NOVELTY - High-efficiency wheat straw-degrading composite bacteria organic fertilizer comprises fermentative wheat straw powder, carrier, and composite bacterium agent. The carrier is core cob powder. The composite bacterium agent comprises bacterium I and bacterium II at 80-90:10-20 weight ratio. The bacterium I comprises Bacillus and/or Pseudomonas. The bacterium II comprises Streptomyces avermitilis and/or Stenotrophomonas maltophilia.    USE - High-efficiency wheat straw-degrading composite bacteria organic fertilizer used for improving soil.    ADVANTAGE - The composite bacterium agent improves decomposition efficiency and shortens decomposition time. The wheat straw is decomposed, recycled, and converted into fertilizer by the different bacteria. The use of high-efficiency degradation composite bacteria solves the problems of land occupation due to filling or fire disaster due to burning, transportation accident, and pollution.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of high-efficiency wheat straw-degrading composite bacteria organic fertilizer comprising:    (A) inoculating different bacteria in culture mediums; rotating at 160 revolutions/minute at 45 degrees C; cultivating in vibration for 24-72 hours; diluting the bacteria solution after cultivating; and making the number of bacteria in each L be over 400 million;    (B) absorbing bacteria onto the carrier at 200 million bacteria/g of carrier; and mixing to obtain bacterium I solution and bacterium II solution; and    (C) crushing wheat straw into wheat straw powder, which is 0.5-0.8 cm in size, using a crusher; taking 80-90% bacterium I solution and 10-20% bacterium II solution according to 0.1 wt.% wheat straw; adding bacterium I solution into the wheat straw powder; keeping the humidity of wheat straw powder at 50-60%; fermenting under aerobic condition for 1-2 days; adding bacterium II solution; keeping the humidity of wheat straw powder at 40-55%; fermenting the wheat straw powder for 4-5 days; and obtaining the fertilizer.