The invention discloses a double-layer multi-purpose grouting construction platform in a shaft. A construction platform main body is divided into upper and lower layers. A protection disc is arranged on the upper layer, and an operation disc is arranged on the lower layer. The protection disc and the operation disc are connected through vertical columns. The protection disc is connected with the earth surface through a hanging device. A circular through hole is reserved in the protection disc. Hook rings are welded on the periphery of the protection disc, and telescopic guide chains are hung on the periphery of the protection disc. The operation disc is composed of a square base disc body and a folding disc body which are connected through a connecting buckle and a connecting shaft. Multiple sets of hydraulic rods guaranteeing the stability of the laying process of the operation disc are arranged in the connecting position of the base disc body and the folding disc body. Hydraulic jacks and flexible damping devices are arranged in the connecting position of a base structure frame and the arc top of the folding disc body. A guide sliding rail is machined along the inner side of an arc ring to guarantee the stability of a drilling machine in the different directions. A plurality of hook rings are welded on the periphery of the operation disc, and the periphery is connected with the protection disc on the upper layer through the guide chains. By carrying out related work with the working platform, the operation condition is good, space is large, and the safety of construction workers and improving of the quality of engineering construction are facilitated.