Sunshade umbrella with hand-held portable rotatable base mechanism

A sunshade umbrella with a hand-held portable rotatable base mechanism, the sunshade umbrella comprising a base assembly, a support assembly arranged on the base assembly and a canopy assembly arranged on the support assembly, wherein the base assembly comprises an upper base plate and a lower base plate which are disposed in a center of the base assembly and are fixedly fitted up and down;

• and the support assembly comprises a support column and a support tube, the support column is insertedly and fixedly connected to the upper and lower base plates, and the support tube is rotatably sleeved outside the support column,
• wherein the base assembly further comprises a plurality of support legs around the base assembly, an inner end of each of the support legs is fixedly fitted between the upper and lower base plates;
• and a lower side of the upper base plate and an upper side of the lower base plate are provided with grooves engaged with the corresponding support legs.