Novel standard penetrometer

The utility model relates to a novel standard penetrometer which comprises a base, a hammerhead, a penetration hammer and a connecting rod, the base is provided with a first through hole allowing the connecting rod to penetrate through, the top end of the connecting rod is fixedly provided with a hammer pad, the penetration hammer is installed at the bottom end of the connecting rod, and the top of the base is provided with a lifting mechanism used for controlling the hammerhead to ascend and descend. Two first semicircular pipes are hinged to the top of the base, the rotating directions of the two first semicircular pipes are different, the two first semicircular pipes are connected through bolts to form a guide pipe, the guide pipe is arranged on the connecting rod in a sleeving mode, a plurality of first grooves are formed in the inner walls of the first semicircular pipes, and first rolling balls are arranged in the first grooves. The device has the effect that the situation that after the hammer head ham