Providing a manufacturing apparatus for a three-dimensional network structure that can adjust repulsive force, dimensional accuracy, and the like more easily and at low cost. The present invention is a manufacturing apparatus 1 for a three-dimensional network structure, which includes a die 3 having an extrusion hole 31 for lowering a molten thermoplastic synthetic resin downward as a linear aggregate 21 composed of a plurality of filaments 20, and a wire The strips 21 are disposed across the long side surfaces 22a and 22b of the strip assembly 21 and have inclined surfaces 44a and 44b that incline toward the strip assembly 21 and have an interval S1 narrower than the arrangement length of the extrusion holes 31 in the short direction. A pair of chutes 42a, 42b disposed opposite to each other, a water supply port 5 for supplying cooling water to the inclined surfaces 44a, 44b, and the long side surfaces 22a, 22b of the filament assembly 21 in contact with the filament assembly. It has endless belts 61a and 61b which take up 21, and has a pair of take-up machines 6 arranged facing each other at an interval narrower than the interval between the pair of chutes 42a and 42b.
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