The invention provides a reusable writing cloth and a special writing liquid thereof. The preparation method of the writing cloth includes: conducting swelling pretreatment on cloth, then using secondary water for repeated flushing; grafting carboxylated cyclodextrin to the cloth by esterification reaction, and using the treated cloth for clathration of triphenylmethane dye, drying the cloth subjected to clathration of triphenylmethane dye, soaking the obtained cloth in a 95DEG C polyvinyl alcohol aqueous solution with a mass fraction of 5-15% for half an hour, taking out the cloth and performing natural airing. The preparation method of the special writing liquid includes: adding an emulsifier OP-10 into an alkali solution, then adding a flavoring agent and stirring the substances evenly. The special writing liquid can be employed to write blue, pink, purple and orange handwritings on different writing cloths, the handwriting can fade by washing, and the writing cloth can be air-dried naturally for rewriting. The writing cloth and the special writing liquid thereof are easily prepared, and the writing cloth can be reusable.