PROBLEM TO BE SOLVED: To provide a composition liquid for 3D shaping that can be cured by ultraviolet irradiation and can obtain high toughness, and a 3D shaped object manufacturing method using the composition liquid.SOLUTION: A composition liquid for 3D shaping contains at least two monofunctional monomers having an ethylenically polymerizable group and a photoinitiator. The monofunctional monomers comprise a monofunctional monomer having an ionic group and a monofunctional monomer not having an ionic group. The composition liquid further contains the counter ion of the ionic groups.
