To provide an ampulliform member that can facilitate slot machining and connecting work and to provide a solid structure manufacturing method.

An ampulliform member 1 is provided with a network part forming part 2 having a plurality of cord parts 3 formed in plate shape and arranged in a parallel state, and web parts 4 connecting the adjacent cord parts 3 in the lengthwise direction and having slots formed in zigzag layout. Connecting frames 10, 20 for connecting the adjacent network part forming parts 2 by pin fitting are provided on both sides in the cross direction of the network part forming part 2. One connecting frame 10 out of the connecting frames 10, 20 has one pin fitting structure part 13 out of a pair of pin fitting structure parts 13, 23 having an engaging part 14 engaged with the pin, and a holding part 16 for holding an object engaging part 24 in a pin engaging state. The other connecting frame 20 has the other pin fitting structure part 23.