Existing shower head are mostly switched by linkage of a decorative cover and a top cover, the top cover is disposed with a plurality of outlet holes, the decorative cover has a plurality of outlet holes as well. Chinese patent database with publishing number CN201195132Y is provided with a multi-functional back-switching type hand shower head, which is disclosed with a shower head comprising a handle, an outlet housing and a switch device, the switch device comprises a switch rotation disk and a water diversion disk, the shower head is switched by rotating the switch device to control the outlet waterways. Although it is switched from a back side, the outlet housing is still disturbed with outlet holes, thus making the switch mechanism complicated and not attractive.