When heated to a temperature at which hot-melting is possible, it can be filled to every corner following the irregularities on the bonding surface, and after photo-curing, new photo-curing that can adhere the adherends more firmly To provide a sex composition. A photocurable composition comprising a (meth) acrylic copolymer (A) having a macromonomer as a copolymerizable component, a crosslinking agent (B), and a crosslinking initiator (C), in small-angle X-ray scattering measurement A photocurable composition is proposed in which the half width X1 (nm-1) of the one-dimensional scattering profile is 0.05 X1 0.30.
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