The utility model discloses a detachable ice breaking and shock absorbing device for an ocean platform. The detachable ice breaking and shock absorbing device comprises an upper circular truncated cone cylinder and a lower circular truncated cone cylinder. The upper circular truncated cone cylinder and the circular truncated cone cylinder are used for being arranged on a guide pipe frame leg of the ocean platform from top to bottom in a sleeved mode. The large caliber end of the upper circular truncated cone cylinder and the large caliber end of the lower circular truncated cone cylinder are arranged on the same horizontal plane, and the large caliber end of the upper circular truncated cone cylinder and the large caliber end of the circular truncated cone cylinder are equal. The building and installing difficulty of the detachable ice breaking and shock absorbing device are not large, detaching is convenient, the problem that the ice load of the detachable ice breaking and shock absorbing device is too large can be solved after the detachable ice breaking and shock absorbing device is repeatedly utilized or used for old platform installation, shock can be effectively reduced at the same time, and the detachable ice breaking and shock absorbing device can be widely applied to ocean platform ice breaking structures, especially platforms which is greatly affected by the ice load.