A terminal device, comprising a middle frame, a heat source device, a first heat dissipation assembly, a second heat dissipation assembly, and a liquid cooling pipe, wherein the first heat dissipation assembly is disposed on one side of the middle frame, and the heat source device and the second heat dissipation assembly are disposed on the other side of the middle frame, wherein the heat source device is partially or completely attached to the second heat dissipation assembly; at least one of the first heat dissipation assembly and the second heat dissipation assembly is a graphene heat dissipation assembly; and the liquid cooling pipe is attached to the middle frame, a projection of the liquid cooling pipe on the middle frame and a projection of the heat source device on the middle frame have an overlapping part, and the projection of the liquid cooling pipe on the middle frame is located in a projection of the first heat dissipation assembly on the middle frame; the projection of the heat source device on the middle frame is located in the projection of the first heat dissipation assembly on the middle frame; the projection of the heat source device on the middle frame is located in the projection of the second heat dissipation assembly on the middle frame; the liquid cooling pipe is disposed on a side, of the middle frame, facing the second heat dissipation assembly, wherein a part of the liquid cooling pipe is close to the heat source device, and the other part of the liquid cooling pipe is far away from the heat source device, wherein the part, of the liquid cooling pipe, close to the heat source device is less than the other part, of the liquid cooling pipe, far away from the heat source device. the first heat dissipation assembly is disposed on one side of the middle frame, and the heat source device and the second heat dissipation assembly are disposed on the other side of the middle frame, wherein the heat source device is partially or completely attached to the second heat dissipation assembly; at least one of the first heat dissipation assembly and the second heat dissipation assembly is a graphene heat dissipation assembly; and the liquid cooling pipe is attached to the middle frame, a projection of the liquid cooling pipe on the middle frame and a projection of the heat source device on the middle frame have an overlapping part, and the projection of the liquid cooling pipe on the middle frame is located in a projection of the first heat dissipation assembly on the middle frame; the projection of the heat source device on the middle frame is located in the projection of the first heat dissipation assembly on the middle frame; the projection of the heat source device on the middle frame is located in the projection of the second heat dissipation assembly on the middle frame; the liquid cooling pipe is disposed on a side, of the middle frame, facing the second heat dissipation assembly, wherein a part of the liquid cooling pipe is close to the heat source device, and the other part of the liquid cooling pipe is far away from the heat source device, wherein the part, of the liquid cooling pipe, close to the heat source device is less than the other part, of the liquid cooling pipe, far away from the heat source device.