Abstract: The present application discloses an environmental friendly detergent tablet, and a preparation method and an tableting equipment thereof, belonging to the field of washing products. An environmental friendly detergent tablet is made of the following raw materials by weight percentage: polyvinyl alcohol, film-forming agent, surfactant, plant starch, co-solvent, bio-enzyme formulation, water softener, and other additives; the preparation method includes the following steps: mixing water, polyvinyl alcohol and film-forming agent under stirring, heating to 80° C-90° C., and continuing stirring to obtain an initial mixed slurry; adding a co-solvent into the initial mixed slurry, then adding a surfactant, then adding a plant starch, under stirring, to obtain a mixed materials; drying the mixed materials, coating with the bio-enzyme formulation, molding, and slicing to obtain the environmental friendly detergent tablet.