This manually retractable projector screen uses high-quality white plastic or fiberglass fabric, with a moderate gain coefficient, true color reproduction, and a wide viewing angle, ensuring a clear and detailed projected image. The manual pull cord design is easy to operate, automatically retracting or positioning at any height for easy adjustment of the image ratio. The sturdy and aesthetically pleasing casing effectively protects the screen from dust and damage. Supports wall mounting or ceiling mounting, saving space and suitable for various scenarios such as home theaters, conference rooms, classrooms, and commercial presentations. The self-locking system is stable, reliable, and durable, making it an economical choice for creating an immersive audiovisual experience.