An interspinous stabilizer, comprising: an interspinous spacer, comprising a central support, having a first direction and a second direction opposite to each other, and an upper side and a lower side perpendicular to the first direction and the second direction； an upper side wing is on the first direction and extending from the upper side of the central support； a lower side wing is on the first direction and extending from the lower side of the central support； an upper protrusion is on the second direction and extending from the upper side of the central support； a lower protrusion is on the second direction and extending from the lower side of the central support； at least one perforation, the perforation traversing through the first direction to the second direction of the central support.
