The invention relates to a multifunctional hydraulic valve opening and closing device which comprises an opening and closing device body. The opening and closing device body comprises an outer shell,a driving chamber is arranged in the outer shell, a driving disc is rotationally installed in the driving chamber, a plurality of driving grooves are formed in the driving disc, connecting rods are arranged in the driving grooves in a sliding manner, a limiting block is arranged at the upper end of each connecting rod, and the lower end of each connecting rod is provided with a clamping claw vertical to the connecting rod; a plurality of guide grooves formed in the bottom wall of the shell body are further included, the guide grooves extend in the radial direction of the driving disc, the connecting rods penetrate the guide grooves, and the clamping claws are located on the outer side of the shell body; a driving device for driving the driving disc to rotate is arranged in the driving chamber; the upper end of the shell body is closed and is fixedly provided with an operation rod, and an operation handle is fixed to the end, far away from the shell body, of the operation rod. Adjustment of the size of spaces between the clamping claws can be achieved by driving the driving disc, a hydraulic valve of a disc-shaped or wheel-shaped operation handle can be operated, and the multifunctional hydraulic valve opening and closing device can be applied to hydraulic valve shaft opening after an operation disc or an operation wheel of the hydraulic valve loses efficiency.