A power driver, comprising: a phase conversion module, which comprises an input member and a first electrical connection member, wherein the input member is electrically connected to the first electrical connection member; a dimming module, which comprises an output member and a second electrical connection member, wherein the output member is electrically connected to the second electrical connection member; a power module, which comprises a power supply member and two third electrical connection members, wherein the two third electrical connection members are respectively arranged at two ends of the power supply member and are electrically connected to the power supply member, and the two third electrical connection members are respectively movably connected to the first electrical connection member and the second electrical connection member; connecting modules, wherein the power module is detachably connected to the phase conversion module and the dimming module by means of the connecting modules; characterized in that the power module further comprises clamping plate members, and the clamping plate members are connected to the power supply member; each of the connecting modules comprises a buckle member, shifting members and a reset member, the buckle member is connected to the shifting members and the reset member; the buckle member is clamped with the respective clamping plate member; the respective shifting members are movably connected to the input member and extend out of the input member; the respective reset member abuts against the input member; the top of each of the buckle members is provided with a first buffer surface, and the position of the respective clamping plate member corresponding to the first buffer surface is provided with a second buffer surface; each of the buckle members comprises a limiting block, and the limiting block is arranged at a bottom of the buckle member; the output member is provided with a limiting groove, and the respective limiting block moves in the limiting groove. a phase conversion module, which comprises an input member and a first electrical connection member, wherein the input member is electrically connected to the first electrical connection member; a dimming module, which comprises an output member and a second electrical connection member, wherein the output member is electrically connected to the second electrical connection member; a power module, which comprises a power supply member and two third electrical connection members, wherein the two third electrical connection members are respectively arranged at two ends of the power supply member and are electrically connected to the power supply member, and the two third electrical connection members are respectively movably connected to the first electrical connection member and the second electrical connection member; connecting modules, wherein the power module is detachably connected to the phase conversion module and the dimming module by means of the connecting modules; characterized in that the power module further comprises clamping plate members, and the clamping plate members are connected to the power supply member; each of the connecting modules comprises a buckle member, shifting members and a reset member, the buckle member is connected to the shifting members and the reset member; the buckle member is clamped with the respective clamping plate member; the respective shifting members are movably connected to the input member and extend out of the input member; the respective reset member abuts against the input member; the top of each of the buckle members is provided with a first buffer surface, and the position of the respective clamping plate member corresponding to the first buffer surface is provided with a second buffer surface; each of the buckle members comprises a limiting block, and the limiting block is arranged at a bottom of the buckle member; the output member is provided with a limiting groove, and the respective limiting block moves in the limiting groove.