Adjustable head fixing assembly

The utility model relates to the field of head fixing assemblies, and discloses an adjustable head fixing assembly which comprises a supporting seat and a supporting frame, the supporting frame is fixedly installed at the bottom end of the supporting seat, a moving groove is formed in the position, located on the supporting frame, of the supporting seat, a base plate is fixedly installed in the center of the moving groove, and a groove is formed in the top end of the supporting frame. Two movable moving blocks are arranged in the groove, a pushing block for pushing the moving blocks to move is arranged between the two moving blocks, a sliding structure is arranged between the moving blocks and the pushing block, a supporting column is fixedly installed at the top end of each moving block, and the supporting columns penetrate through the supporting base and extend to the top end of the moving groove; a clamping piece for clamping the head is arranged on the inner side of the supporting column, a sliding block