The utility model relates to a device is walked by way to optical cable includes to be used for placing the box body of waiting to erect the optical cable, is provided with the support that the upper end has the gyro wheel at box body both ends, the gyro wheel rolls on lieing in old optical cable, has offered the hole at the box bottom both ends of box body, is provided with in the hole to be used for fixing the mounting of waiting to set up the optical cable. Use when this application can run into the circumstances such as highway, river, circuit leap when carrying out optical cable installation, walk the shaft tower of the other end with new optical cable through this instrument on the basis of original optical cable during the use on. Before not having this instrument, need adopt the crane when erectting, take scaffold frame etc. And to take multiple measure just can carry out optical cable installation, increased manpower, material resources, financial resources, use this application can make the maximum simplification of this type of problem.