Detergent tablet free of SLS surfactant and preparation method thereof

A detergent tablet free of sodium lauryl sulfate (SLS) surfactant, wherein the detergent tablet free of SLS surfactant is prepared by drying a slurry, and the slurry comprises the following raw materials by weight percentages:

• 10%-40% film-forming agent, 15%-40% anionic surfactant, 2%-12% non-ionic surfactant, 0.5%-5% chelating agent, 0.4%-4% enzyme preparation, 0.5%-5% auxiliary agent, and 0.1%-1% essence;
• wherein the film-forming agent comprises film-forming agent A and film-forming agent B, the film-forming agent A is polyvinyl alcohol, and the film-forming agent B comprises at least one of cellulose or dodecenyl succinate starch ester, and a weight ratio of the film-forming agent A to the film-forming agent B is (2-15):1;
• the anionic surfactant comprises at least two of sodium α-olefin sulfonate, sodium fatty acid methyl ester sulfonate, or sodium hydroxyethyl sulfonate;
• the non-ionic surfactant comprises at least two of fatty alcohol polyoxyethylene ether, fatty acid methyl ester ethoxylate, oil ethoxylate, ethylene-oxide/propylene-oxide (EO/PO) block polyether, plant saponin, alkyl glycoside, or alcohol ether glycoside;
• and
• the chelating agent comprises at least one of gluconic acid and salts of the gluconic acid, glutamic acid diacetic acid and salts of the glutamic acid diacetic acid, methyl glycine diacetic acid and salts of the methyl glycine diacetic acid, or aspartic acid diacetic acid and salts of the aspartic acid diacetic acid.