Screeding and dividing joint forming suite and ground leveling layer construction method

The invention discloses a screeding and dividing joint forming suite and a ground leveling layer construction method implemented based on the screeding and dividing joint forming suite. The screeding and dividing joint forming suite comprises long strip-shaped screeding dividing members correspondingly arranged along a prefabricated dividing joint. A plurality of long strip-shaped screeding members are arranged between every two adjacent long strip-shaped screeding dividing members. The screeding dividing members and the screeding members are spaced in parallel and keep a consistent elevation. Each screeding dividing member comprises a first base and a U-shaped light steel keel which can move up and down on the first base so as to adjust the height of the U-shaped light steel keel. Each screeding member comprises a second base and a C-shaped light steel keel which can move up and down on the second base so as to adjust the height of the C-shaped light steel keel. According to the screeding and dividing joint