PROBLEM TO BE SOLVED: To provide a dental pretreatment material which makes it possible to clearly and easily confirm its dry condition after application to a tooth and a dental filling/restoration material kit comprising the dental pretreatment material.SOLUTION: The dental pretreatment material comprises (a) an acidic group-containing polymerizable monomer, (b) water, and (c) a color changing material which makes it possible to confirm a dry condition of the dental pretreatment material after application to a tooth from a change in the developed color before and after drying.