The invention relates to green antibacterial efficient cleanser essence and a preparation method thereof, and belongs to the technical field of detergents in daily-use chemical industries. The green antibacterial efficient cleanser essence comprises the following components by weight: 5-10 parts of tea saponin, 0.2-0.5 part of nano-silver, 0.5-1 part of a natural substance extractive, 15-25 parts of lauryl sodium sulfate, 5-10 parts of sodium lauroyl sarcosine, 5-10 parts of ethylene diamine tetraacetic acid, 1.2-1.8 parts of citric acid, 1.2-1.8 parts of sodium citrate, 0.5-1 part of refined salt, 0.5-1 part of sodium benzoate, 0.5-1 part of AES, and 30-40 parts of water. The preparation method comprises the following steps: using lauryl sodium sulfate, sodium lauroyl sarcosine, the ethylene diamine tetraacetic acid and the water according to the proportion and mixing uniformly, putting ethylene diamine tetraacetic acid into the water and stirring uniformly, then adding the citric acid, sodium citrate, the refined salt, and sodium benzoate into the water slowly while stirring at the temperature of 35-40 DEG C until a product is sticky, finally, adding tea saponin, the nano-silver, the natural substance extractive, and the AES and stirring at the temperature of 40-45 DEG C for 8-10 h to obtain a finished product. Compared with conventional cleanser essence, the green antibacterial efficient cleanser essence has high dirt-removing power, little residual, nontoxicity and an antibacterial effect.