Construction formwork of gypsum cast-in-place wall and construction method of construction formwork

The invention relates to a construction formwork of a gypsum cast-in-place wall and a construction method of the construction formwork. The construction formwork comprises main-face formworks, side-face formworks, a bottom-face formwork, clamping dies, bolts and inner limiting sleeves, the main-face formworks are used for pouring a gypsum base wall material, the side-face formworks close the main-face formworks during pouring, the bottom-face formwork is used for pouring a waterproof cushion layer material, the clamping dies limit the main-face formworks during pouring, the inner limiting sleeves sleeve the bolts and play a role in limiting during pouring, height of the bottom-face formwork is adapted to that of a waterproof cushion layer, heights of the main-face formworks and the side-face formworks are adapted to that of the wall, and bolt holes used for connecting and positioning are formed in each of the main-face formworks, the bottom-face formwork and the side-face formworks. The construction formwork is supportive of construction of a waterproof layer and gypsum pouring construction sequentially, and gypsum pouring can be completed at one time, so that the construction formwork is high in construction efficiency and less prone to mortar leakage; waterproof protection of the bottom of the gypsum wall is realized.