The utility model provides a no bolt wave form slab bridge roof beam telescoping device effectively solves expansion joint installation, maintenance complicacy, and bridge structures harms the scheduling problem, including narrow wave plate and wide wave plate, narrow wave plate is connected with wide wave plate, narrow wave plate is connected the face with wide wave plate and is the wavy surface,a skin weld anchor assembly under the narrow wave plate, with the narrow wave plate support group spare of skin weld under the narrow wave plate, an anchor assembly is close to the narrow wave platesupport group spare of wide wave plate terminal surface welding, the 2nd anchor assembly of skin weld under the wide wave plate, the wide wave plate support group spare of skin weld under the wide wave plate, the 2nd anchor assembly is close to the wide wave plate support group spare of narrow wave plate terminal surface welding, weld water -proof component between narrow wave plate support groupspare and the wide wave plate support group spare, the life at extension expansion joint practices thrift expansion joint installation and maintenance duration, fills the asphalt cement after the installation between the wave form seam, and effective dustproof falling is made an uproar, because of a minute plate installation, only needs the part to demolish during the maintenance, practices thriftupkeep charges and uses.