PROBLEM TO BE SOLVED: To provide a dental resin separation material kit in which a rice cake-shaped resin can be easily filled in a cavity formed by a gypsum surface for a denture base formed to a gypsum mold obtained by embedding a wax denture in a flask with gypsum every master model and eliminating wax, the separation between the denture base of an artificial tooth obtained by polymerizing the rice cake-shaped resin according to the usual method and the gypsum surface for forming the denture base is facilitated, and furthermore, the good compatibility between a mucosal surface of the denture base of the artificial tooth and a mucosal surface of the master model can be properly obtained.SOLUTION: A dental resin separation material kit comprises a first solution containing 1.4 to 2.0 pts.wt. of water-soluble alginate, and 1.2 to 1.6 pts.wt. of pH buffer, based on 100 pts.wt. of water, and a second solution containing 1.0 to 1.5 pts.wt. of liquid modifier based on 100 pts.wt. of water.