The utility model discloses a combined type cable testing bridge support for cable lays perpendicularly comprises the support body, the support body includes the girder that the level set up, the welding of girder bottom has supplementary bracing, terminal surface and rear end face are all along the equidistant mounting hole that is provided with of length direction before the girder, and every girder together has two pairs of bolt and clamp plates that are used for connecting the crane span structure. The utility model discloses can effectively improve the space utilization of job site, the weldment work volume is little, preparation simple process, and with low costs, available engineering clout is makeed, can make up at will according to on -the -spot actual demand, and the installation is nimble convenient.