A lighting apparatus includes a first conductive unit, an installation bracket, a second conductive unit, a light body and a top cover. The first conductive unit is used for connecting to an external power source. The installation bracket is fixed to an installation platform. The first conductive unit is disposed on a first side of the installation bracket. The top cover is used for disposing the second conductive unit and the light body. The top cover is detachably connected to the installation bracket from a second side of the installation bracket.