The invention discloses an assembly-free hinge-locked foldable tent. The assembly-free hinge-locked foldable tent consists of a supporting frame and tent cloth sleeving the supporting frame, wherein the supporting frame consists of two annular connecting-rod mechanisms, connecting-rod mechanisms, scissor-like mechanisms and a zipper; each connecting-rod mechanism is formed by the end-to-end connection of two nodes on the diagonal line of 4n diamond four-connecting-rod mechanisms; each scissor-like mechanism is formed by the series connection of no fewer than one parallel scissor-like unit and a bottom polar scissor-like unit; the two connecting-rod mechanisms and the two scissor-like mechanisms are uniformly arranged in an interlaced manner, and are connected with the pin joints of the two annular connecting-rod mechanisms; the zipper is connected to the two scissor-like mechanisms on one side of the annular connecting-rod mechanisms, the zipper penetrates through the other ends of two connecting rods on the inner side and is fixed on the other ends of two connecting rods on the outer side. Compared with the conventional tent, the assembly-free hinge-locked foldable tent disclosed by the invention has the advantages that the complication of an assembly process is avoided, after being folded, the tent is small in size and convenient to carry, the structure is firm, and the tent provides a good temporary dwelling place for field activities, such as camping.