Embedded bellows fixing magnet is a magnetic fixing device designed for building pre-buried projects. It is mainly used to stabilize bellows, wire pipes or other pre-buried pipelines during the pouring of precast concrete (PC components) to ensure their accurate position and no deviation. The product uses high-strength magnets to adsorb on steel formwork or steel skeleton, providing a fast and adjustable fixing solution, greatly improving construction efficiency and reducing the cumbersome processes caused by traditional binding or welding.