The utility model relates to a connecting device of high -pressure gas pipeline and constant force spring gallows. It is including thick asbestos insulating layer, thick rubber slab, thick band steel ferrule, jib and turn -buckle, and thick asbestos insulating layer is hugged closely and is wrapped up in on high -pressure gas pipeline's outer wall, and thick rubber slab wraps up outside thick asbestos insulating layer again, and thick band steel ferrule is the thick rubber slab of free accommodation again, and thick band steel ferrule passes through connecting bolt to be connected with the jib, and the jib is connected with the turn -buckle again. The utility model discloses a connecting device simple structure of high -pressure gas pipeline and constant force spring gallows, processing saves time, laborsaving, all materials are easy, the cost of manufacture is low, safe and reliable, easy and simple to handle, construction rapidly, economic benefits is showing.