Table board support capable of being adjusted in multiple dimensions

The utility model relates to a table board support capable of being adjusted in multiple dimensions, which comprises a positioning base, an adjusting assembly and a positioning frame assembly from bottom to top, the positioning base is connected with the adjusting assembly through a vertical telescopic rod, the adjusting assembly is connected with the positioning frame assembly, and the adjusting assembly comprises a moving assembly and an angle adjusting assembly. The moving assembly is rotationally connected with the angle adjusting assembly; and a keyboard main body is placed on the positioning frame assembly. After the adjusting screw rod is screwed, the fixing hoop is locked on the table top through the non-slip mat. When the keyboard main body is positioned, the fixing block can be pulled to slide, so that the keyboard main body is clamped and fixed by the barrier strip and the clamping plate, and the positioning effect of the keyboard main body is good. The keyboard body can be adjusted to a proper pos