Rotationally-foldable tablet personal computer bracket

The utility model relates to a rotationally-foldable tablet personal computer bracket, which comprises a base, a support frame and a bracket, wherein the base is hinged to the support frame and the bracket in sequence; the base is formed by hinging a front segment frame body and a back segment frame body; limiting clamping grooves are uniformly distributed in the top surface of the front frame body along the length direction; the back frame body is hinged to the bottom end of the support frame; a limiting baffle plate is arranged at the bottom end of the bracket vertical to the top surface of the bracket; a clamping block is arranged at the bottom of the limiting baffle plate; a sound box and a USB (Universal Serial Bus) inserting hole are embedded into the bracket; elastic straps for preventing a tablet personal computer from sliding off or moving are further arranged on both sides of the bracket. The computer bracket is folded when not in use, and is very small in size, and convenient to carry; during use, the computer bracket is unfolded, is suitable for the commercially-available tablet personal computers of 5-10 inches of any brand, and is convenient for adjusting the inclination angle in order to avoid fatigue of the wrist and cervical vertebra of a user; meanwhile, the sound box with an independent power supply is integrated on the bracket, so that music can be played independently. When the tablet personal computer is used for listening to music or watching videos, the sound box can be taken as an external sound box in order to increase the volume.