The invention relates to the technical field of storage buckets, in particular to a folding storage bucket and a manufacturing method thereof. The folding storage bucket comprises a storage bucket body. The storage bucket body comprises two body sheets symmetrically arranged. Each body sheet comprises a top edge, a bottom edge and two side edges. The oppositely arranged side edges and bottom edges of the two body sheets are fixedly connected. Side edge indentations are formed at the connecting positions of the side edges, and a bottom edge indentation is formed at the connecting position of the bottom edges. The storage bucket body is formed through inner pressing of the side edge indentations and the bottom edge indentation. The body sheets are provided with side edge bending lines and bottom edge bending lines. The folding storage bucket has a folding function, the storage bucket is formed through folding during using, the storage bucket is restored into a flaky structure when not used, the occupied space is saved, and the manufacturing cost of the flaky structure is low.