This invention relates to the field of home decoration technology and discloses a smart home light that is easy to assemble and disassemble, including a modular light dustproof device. The modular light dustproof device has a modular current transmission device threadedly connected to its bottom. The modular current transmission device includes a first cylindrical shell, a first limiting block fixedly connected to the surface of the first cylindrical shell, an annular stabilizing device movably connected to the surface of the first limiting block, a first limiting groove formed on the surface of the annular stabilizing device, a second limiting device rotatably connected to the surface of the first cylindrical shell, and an elastic current transmission device movably connected inside the first cylindrical shell. By using the modular current transmission device, without affecting the disassembly speed, the annular stabilizing device simultaneously connects the modular light dustproof device and the modular current transmission device, restricting their individual rotation and preventing the threaded connection between them from loosening due to external force.