The turnover formwork construction means that the turnover formwork consists of three large steel formwork, supports and steel pipe scaffold working platforms (during construction, the supports are connected with the poured piers with the increase of pier height to increase the stability of the supports). When the formwork height is high, the first formwork is supported on the top of the base, and the second formwork is supported on the first formwork. When the concrete strength in the second quarter is above 3MPa, and the concrete strength in the first quarter is above 10MPa, dismantle the formwork in the first quarter, clean the surface of the formwork, apply the release agent, then hoist it to the formwork in the second quarter with a crane and a manual hoist, and put the formwork in the third quarter. At this time, all construction loads are transferred from the hardened pier concrete with certain strength to the top of the foundation. This cycle forms a cycle of lifting scaffolding → steel bar extension and binding → formwork removal and cleaning → formwork lifting and assembling → measuring the center line and elevation → concrete pouring and maintenance until the design height is reached.