The invention discloses a wind power blade demoulding and hoisting clamp. A rotating device is hinged to a main clamp through a main pin shaft. A pressing assembly is fixed to the rotating device. A lower buffer pad mounting plate matched with the pressing assembly is arranged on the main clamp. The distance between the pressing assembly and the lower buffer pad mounting plate can be adjusted by rotating the rotating device, so that a wind power blade can be clamped or released. According to the wind power blade demoulding and hoisting clamp provided by the invention, a hoisting ring is pulled up through external force, and tensile force generated during hoisting is partially converted into force used for locking the wind power blade, so that the wind power blade is locked; and clamping force is moderate when the wind power blade is demoulded and hoisted, so that it is guaranteed that the wind power blade is not prone to falling off, and not prone to being damaged due to overhigh stress.