The utility model provides a two-way hydraulic slip which comprises a first sleeve, a second sleeve, a center cylinder, slip devices, a locking device and a breakover device, wherein the diameter of the first sleeve is the same as that of the second sleeve. The center cylinder is arranged in the first sleeve and the second sleeve in a sleeving mode. The slip devices are arranged between the first sleeve and the second sleeve. The slip devices comprise first conical bodies arranged in a sliding clamping groove in the bottom end of the first sleeve, second conical bodies arranged in a sliding clamping groove in the top end of the second sleeve and slip blocks arranged between the first conical bodies and the second conical bodies. The locking device comprises a locking sleeve arranged in the center cylinder is a sleeving mode and a locking ball arranged in the locking sleeve in a sleeving mode. The breakover device is arranged below the center cylinder. The two-way hydraulic slip solves the problem that in the prior art, due to the fact that the upward pressure or the outward pressure can only be overcome by arranging slips of different types on the upper portion and the lower portion of a packer, the slip structure is complex.