A storage box for an ultra-efficiency PVA mop is disclosed. The mop includes a mop
handle and a PVA mop head located at the lower end of the mop
handle. The PVA mop head includes a mop plate and a cleaning PVA head located below the mop plate. The key feature is that the PVA mop is equipped with a storage box containing a storage slot. When the mop is placed in the storage box, the wiping surface of the PVA mop head fits into the storage slot. Because the storage box of this invention provides a moisturizing effect when the PVA mop is placed, it allows the PVA mop to be reused without needing to absorb water and soften, thus providing users with a time-saving and labor-saving experience. Furthermore, the PVA mop, when placed in the storage box, is both aesthetically pleasing and hygienic.