Water decoloration solid whiteboard marker and preparation method thereof

The invention discloses a water decoloration solid whiteboard marker and a preparation method thereof. The preparation method specifically comprises adding sorbitol, octadecanoic acid, dodecanoic acidand sodium alkyl sulfate into a high-temperature furnace, heating and mixing into liquid; stirring and dispersing, and then adding sodium fatty alcohol polyvinyl ether sulphate; adding sodium hydroxide into a stainless steel container, then adding water, adding the mixture into the high-temperature furnace after the sodium hydroxide is dissolved, dispersing and mixing, and then adding dealdehydedalcohol for mixing; putting the mixed raw materials into a forming mold, and cooling to obtain a material A; putting the material A into a high-temperature furnace, melting at high temperature, thenadding trisodium phosphate, dispersing and stirring, then adding phenolphthalein, slowly injecting the mixture into a forming mold after the mixture becomes red, and cooling and forming to obtain thered solid whiteboard marker.