Wall-mounted projection screen convenient to install

The utility model belongs to the technical field of projection screens, particularly relates to a wall-mounted projection screen convenient to install, and aims to solve the problem that the use effect is affected due to the fact that an existing wall-mounted projection screen is inconvenient to rapidly install or detach in the use process and is prone to being contaminated by stains in the use process. The device comprises a shell, a storage groove is formed in the bottom of the shell, a mounting groove is formed in the shell, a first through hole is formed in the inner wall of one side of the mounting groove, the first through hole communicates with the storage groove, a first rotating shaft is rotatably mounted in the first through hole, a rolling shaft fixedly sleeves the outer side of the first rotating shaft through welding, and a curtain is connected to the outer side of the rolling shaft; according to the utility model, in the use process, the curtain can be conveniently and quickly mounted or dismoun