[Means for solution] A dental curable composition has a curing time of 30 seconds to 120 minutes and includes a compound having an acidic group in the molecule (A), a polymerizable monomer (B), an organic amine compound (C) and a sulfur-containing reducing compound (D). In the dental curable composition, the content of the component (A) is 0.01 to 80 parts by weight, the content of the component (B) is 21 to 99.8 parts by weight, the content of the component (C) is 0.01 to 30 parts by weight and the content of the component (D) is 0 to 30 parts by weight (the total of the components (A) to (D) is 100 parts by weight. When any of the compounds belongs to a plurality of the components (A) to (D), the parts by weight of the compound is divided by the number of the components to which the compound belongs, and the quotient is used as the content of each component). [Advantage] The composition may be cured at a relatively low temperature close to the body temperature without using a peroxide-based polymerization initiator, and has good sealing property and adhesion.