When acetic acid bacteria were put into the broth, microbial cellulose grew. After its complete growth, the broth still contains nutrition. In addition to the application in beauty skin care for soothing the skin, It will become great natural fertilizer if we concentrated it, and made it into liquid fertilizer. After farmers’ cucumber planting experiment, they had abundant harvest; fruit has become larger with a month earlier harvest. Therefore, broth fermentation will be a great material in the development of natural fertilizers in the future.