The lamp body structure includes a lamp panel and a power component. The lamp panel comprises a bottom plate and a plurality of side plates connected end to end. The bottom plate and each side plate together form a positioning cavity for the light source assembly, wherein the one side plate is located at the edge of the plate at the opening of the cavity and is disposed away from the bottom plate. The direction of the cavity extends and forms a support plate, and the support plate and the corresponding side plate together form a seating groove. The power component is connected to an external power source and supplies power to the light source component. One end of the power component is inserted into the mounting groove along the corresponding side plate and abuts the support plate.