To provide a three-dimensional structure including fiber layer(s) with ultrafine staple fibers dispersed therethrough in coarse mutual adhesiveness, and to provide a method for producing the structure.

This three-dimensional structure 100 comprises supports 52 and 53 each of three-dimensional shape and fiber layers supported on the supports 52 and 53 respectively and comprising ultrafine staple fibers 71 and 72 each ≤4 μm in fiber diameter and ≤3 mm in fiber length dispersed therethrough respectively; wherein the add-on of deposits (except powder) on the fiber layers. is ≤0.5 mass%. The other version of this three-dimensional structure 100 comprises a support of three-dimensional shape and a fiber layer supported on the support and comprising ultrafine staple fibers ≤4 μm in fiber diameter and ≤3 mm in fiber length dispersed therethrough; wherein the fiber layer is formed by a method other than wet process.