The present invention relates to a method for manufacturing an eco-friendly dishwashing detergent, and in particular, a vegetable surfactant and baking soda 12-15: 1-2: 1 in a culture medium in which a stock solution of useful microorganisms (EM) is cultured at 20-40 ° C. for 2-7 days. By fermenting the mixed solution mixed in a weight ratio of ~2 for 2 to 7 days in a fermentation room at 20 to 40° C. and homogenizing it, it is possible to prevent water pollution caused by synthetic detergents, as well as to have strong cleaning power and further help to improve water quality About the manufacturing method of eco-friendly kitchen detergent
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