PROBLEM TO BE SOLVED: To provide higher adhesive strength between dentin and a prosthesis by enhancing mutual solubility of a dental pretreatment material and a dental cement material, thereby improving compatibility of them at a lamination interface of them, in a dental cement kit consisting of the dental pretreatment material and the dental cement material.SOLUTION: A dental cement kit consists of a combination of: a dental pretreatment material (A) containing a compound having affinity to a surface on which a cement material a1) is adhered; and a dental cement material (B) including 100 pts.wt of a radical-polymerizable monomer b1), a dendritic polymer b2), preferably 5-70 pts.wt. of a hyperbranched polymer, 50-400 pts.wt. of an inorganic filler b3), and an effective amount of a polymerization initiator b4).