A shower head assembly includes a main body, a water outlet panel, a mounting tube, a shade, and a locking nut. Thus, the mounting tube is indirectly combined with the water outlet pipe by the universal connector to form a pivotable shower head and is directly combined with the water outlet pipe to form a fixed shower head, thereby enhancing the versatility of the shower head assembly. In addition, the shower head assembly is provided with a shade having a variable shape to vary the pattern and profile of the shower head assembly, thereby enhancing the aesthetic quality and decreasing costs of the shower head assembly.