High-altitude construction complete set device and method in winter

The invention provides a high-altitude construction complete set device and method in winter. The construction period in high-cold areas in north China is short; the construction period is six months in winter; the temperature in winter is below minus 30 DEG C and the construction period of the main tower body of a cable-stayed bridge is long. The construction complete set device in winter of the high tower body can prevent the construction beyond the year of the tower body. The inventive method includes: arranging a movable greenhouse wall tightly packing one construction section in the air of the construction, utilizing thermal insulation inflaming retarding materials at the outside of an outer template, on an upper cover of the greenhouse wall and at the bottom of an inner template for thermal insulation, utilizing a circulation hot water pipe for preheating joint concrete, providing a hot source for the greenhouse wall through a steam calandria, a warm air curtain and the circulation hot water pipe; when