This manufacturing method for manufacturing a cleaning member comprises: a fiber bundle conveying step for conveying a fiber bundle to a merging part that overlays the fiber bundle on nonwoven fabric strips a nonwoven fabric conveying step for conveying the nonwoven fabric strips to the merging part; a multilayer web forming step for forming a multilayer web by overlaying, in the merging part, the fiber bundle conveyed in the fiber bundle conveying step on the nonwoven fiber strips conveyed in the nonwoven fabric conveying step; and a joining step for joining the fiber bundle and the nonwoven fabric strips to each other in the multilayer web. In the fiber bundle conveying step, the fiber bundle is conveyed at a tension at which there is no width shrinkage in the fiber bundle, and in the multilayer web forming step, the multilayer web is formed by overlaying the fiber bundle on the nonwoven strips while applying a tension that does not cause width shrinkage in the fiber bundle.