PURPOSE: To form a regenerated cotton nonwoven fabric having a cloud-stream pattern, a Japanese paper-like appearance and excellent mechanical strength by using cotton fiber rag opened to an opening degree falling within a specific range and integrating the rag by a three-dimensional interlocking treatment.

CONSTITUTION: This nonwoven fabric made of regenerated cotton fiber is produced by opening a yarn or cloth made of cotton fiber to an opening degree of ≥30% with a rag opener, treating the opened product with a random webber to form a web composed of cotton fiber rag having an opening degree of 40-75% and applying a high-pressure liquid jet to the web to integrate the fibers constituting the web by the three-dimensional interlocking of the fibers.