NOVELTY - Rapid organic waste composting of aquatic plant using biomass charcoal, comprises uniformly mixing base stacking (including a mixture of fresh aquatic plant and dried straw) and biomass carbon to form a mixed material, stacking the mixed material on composting sites, composting the mixed material by utilizing windrow aerobic composting method, box-type aerobic composting method or trough-type aerobic composting method, maintaining the stack temperature in the composting process until mixed materials are fully biodegradable to form humic substance and to obtain the organic fertilizer product.    USE - The method is useful for rapid organic waste composting of aquatic plant using biomass charcoal (claimed).    ADVANTAGE - The method saves moisture content of aquatic plant by normal dehydrating and volume-reducing process, and achieves simultaneous fresh aquatic plant fast compositing and ammonia emission reduction processes.    DETAILED DESCRIPTION - Rapid organic waste composting of aquatic plant using biomass charcoal, comprises: (a) taking compost raw materials comprising base stacking and biomass carbon, where the base stacking is formed by a mixture of fresh aquatic plant and dried straw, the ratio of fresh aquatic plant and drying straw according to the dry basis carbon-nitrogen ratio of the base stacking is 22-28, the natural weight is obtained by conversion according to the actual moisture content of the fresh aquatic plant and dried straw, the dry basis carbon-nitrogen ratio is the content ratio of carbon and nitrogen in plants under moisture-free state, the added amount of biomass carbon is 40-50% of the dry basis weight of the base stacking, and the moisture content of fresh aquatic plants, dried straw and biomass carbon is 60-75%, the fresh aquatic plant includes chopped submerged plant (waterweed, algae, Hydrilla, hornwort, fox tail algae, lantern (sic), pondweed and/or nutria algae) and/or floating plant (water lily, hyacinth, Lemna minor, duckweed, Nymphoides, arrowhead, water chestnut and/or gordon Euryale), and the dried straw is chopped and naturally dried crop straw; (b) uniformly mixing fresh aquatic plant, dried straw and biomass carbon to form a mixed material, and stacking the mixed material on composting sites; and (c) composting the obtained mixed material by utilizing windrow aerobic composting method, box-type aerobic composting method or trough-type aerobic composting method, maintaining the stack temperature in the composting process at more than 55 degrees C for at least 5 days or the stack temperature at 50-55 degrees C for at least 10 days until mixed materials are fully biodegradable to form humic substance and to obtain the organic fertilizer product.