PROBLEM TO BE SOLVED: To provide a composition liquid for 3D shaping that can be cured by ultraviolet irradiation and can obtain a 3D shaped object capable of obtaining high toughness, and a 3D shaped object manufacturing method using the composition liquid.SOLUTION: A composition liquid for 3D shaping contains a monofunctional monomer having an ethylenically polymerizable group and a polyfunctional monomer containing at least one ethylenically polymerizable group, and a photoinitiator. The polyfunctional monomer contains at least a first monomer having a molecular weight of 1,000 or less and having at least one functional group selected from the group consisting of an aromatic hydrocarbon group, an alicyclic hydrocarbon group, a primary amide group, and a secondary amide group and a second monomer having a molecular weight of 1,000 or less and not having an aromatic hydrocarbon group, an alicyclic hydrocarbon group, a primary amide group, and a secondary amide group. The composition liquid does not substanti
