A surface-mount downlight configured to be mounted to a ceiling, comprising: a mounting top plate configured to be fixedly connected to the ceiling; and a downlight body configured to be connected to the mounting top plate, the downlight body comprising a hollow main body and a light source module within the hollow main body, wherein, the surface-mount downlight is provided with a suspension mount assembly, the suspension mount assembly comprising: at least two connecting plates provided by the mounting top plate; and at least two fixing blocks provided by and integrally formed with the hollow main body and corresponding to the at least two connecting plates, wherein the suspension mount assembly is configured to be in: i) a first position in which the at least two connecting plates and the at least two fixing blocks avoid each other in a suspension mount direction, so that the downlight body is allowed to freely move toward and away from the mounting top plate in the suspension mount direction, thereby facilitating assembly and disassembly; and ii) a second position in which the downlight body is suspension-mounted to the mounting top plate, and the downlight body is prohibited from moving toward or away from the mounting top plate in the suspension mount direction; wherein, via a rotational movement of the mounting top plate with respect to the downlight body in a direction substantially transverse to the suspension mount direction, the suspension mount assembly is allowed to be switched between the first position and the second position, characterized in that, the at least two fixing blocks are disposed on the inner wall of the hollow main body and located at the same horizontal position, and the at least two connecting plates are arranged at the edge of the mounting top plate and extending circumferentially, wherein the connecting plate further comprises a connecting portion and a hanging portion connected to the connecting portion and configured to be inclined downward, wherein the connecting plate further comprising a guide portion connected to an end of the hanging portion that faces away from the connecting portion, and the guide portion is arranged substantially horizontally. a mounting top plate configured to be fixedly connected to the ceiling; and a downlight body configured to be connected to the mounting top plate, the downlight body comprising a hollow main body and a light source module within the hollow main body, wherein, the surface-mount downlight is provided with a suspension mount assembly, the suspension mount assembly comprising: at least two connecting plates provided by the mounting top plate; and at least two fixing blocks provided by and integrally formed with the hollow main body and corresponding to the at least two connecting plates, at least two connecting plates provided by the mounting top plate; and at least two fixing blocks provided by and integrally formed with the hollow main body and corresponding to the at least two connecting plates, wherein the suspension mount assembly is configured to be in: i) a first position in which the at least two connecting plates and the at least two fixing blocks avoid each other in a suspension mount direction, so that the downlight body is allowed to freely move toward and away from the mounting top plate in the suspension mount direction, thereby facilitating assembly and disassembly; and ii) a second position in which the downlight body is suspension-mounted to the mounting top plate, and the downlight body is prohibited from moving toward or away from the mounting top plate in the suspension mount direction; i) a first position in which the at least two connecting plates and the at least two fixing blocks avoid each other in a suspension mount direction, so that the downlight body is allowed to freely move toward and away from the mounting top plate in the suspension mount direction, thereby facilitating assembly and disassembly; and ii) a second position in which the downlight body is suspension-mounted to the mounting top plate, and the downlight body is prohibited from moving toward or away from the mounting top plate in the suspension mount direction; wherein, via a rotational movement of the mounting top plate with respect to the downlight body in a direction substantially transverse to the suspension mount direction, the suspension mount assembly is allowed to be switched between the first position and the second position, characterized in that, the at least two fixing blocks are disposed on the inner wall of the hollow main body and located at the same horizontal position, and the at least two connecting plates are arranged at the edge of the mounting top plate and extending circumferentially, wherein the connecting plate further comprises a connecting portion and a hanging portion connected to the connecting portion and configured to be inclined downward, wherein the connecting plate further comprising a guide portion connected to an end of the hanging portion that faces away from the connecting portion, and the guide portion is arranged substantially horizontally.