The invention discloses a crossing-type straight-route clamp. The clamp comprises two independent tubular clamp bodies which are identical in structure, are symmetrical during work and are distributed in a tilting structure from bottom to top; the lower bevel edge of each clamp body is of a step-shaped body; and a through hole is formed in each step of each clamp body. The crossing-type straight-route clamp also comprises two connecting bolts which can be inserted into the through holes on the two steps of the clamp bodies; the length of each connecting bolt is more than the width of a clearance between two cross arms; and the upper tilting end of each clamp body is provided with a through hole for mounting a lead screw. The successful development of the crossing-type straight-route clamp fundamentally solves the problem that a double-string and double-suspension insulator of a tangent suspension tower is unable to be subjected to comprehensive electric overhaul. In addition, the crossing-type straight-route clamp simplifies working procedure, improves the efficiency and safety of the overhaul, alleviates the labor intensity of personnel and is worthy of promotion in the same industry.