With the increasing of cutover times in transit network optimization, new construction of optical cables and line transfer etc., it is likely to cause non-connection point failure of cable line or normal line transfer and cutover. The traditional interrupt service cutover repairing method has not meet with the practical requirements. The optical cable profile cutover technology is discussed in this paper. And the technology works under the premise of not interrupting the operation of normal core system, solving the line transfer and cutover in the cable accident.