The utility model provides an insulating collapsible barrier of high strength platform, including the composite sheet, four glass steel pipe stands pass through stainless steel connection knuckle joint on the composite sheet, has rotatory rail horizontal pole through the knuckle joint on the every glass steel pipe stand, and the nylon buckle is installed to rotatory rail horizontal pole free end, and when the guardrail launched vertical position, aluminium closed the automatic locking of gold card round pin, rotatory rail horizontal pole to the dead rail stand of opposite rail buckle automatic locking. The tongue of pulling on the nylon card that excels in of buckleing is opened rotation cross bar and is turned back, and aluminium closes that the button of gold card round pin is pressed, the guardrail can fall, used labour saving and time saving, safe and reliable, had realized the semi -automatization installation, has improved greatly and has made efficiency, collapsible placing, the space size of the equipment that significantly reduces.