The invention relates to a dustless colored chalk dedicated for a whiteboard capable of fading chemically, which comprises the components of land plaster, water, a plasticizer, binder, emulsifying wax, dye and a flavouring agent. The dustless colored chalk dedicated for the whiteboard capable of fading chemically has the advantages of unique formula and simplicity and convenience for preparation, has the writing function of a colored chalk, and can be erased by using an erasing agent in the patent for invention CN101709174A. The dustless colored chalk can be used for writing on the whiteboard smoothly, has better writing effect than that of a traditional chalk and is similar to a crayon, overcomes the defect that the traditional chalk is easy to break and drop dregs, and is cheaper and more durable than the crayon.