This magnetic metal baseboard is designed to protect, reinforce and beautify walls and floors, overcoming such disadvantages of traditional counterparts as susceptibility to damp and insects, complicated installation, and easy dust accumulation. Featuring the magnetic attraction approach that is quick and free of glue or plug, it is only 5mm thick after installation and allows recycling after disassembly. Besides, the seamless connection between the connecting fittings and the main body realizes strong space adaptability, allowing multi-size combination to adapt to diversified interior space.