A terminal display assembly, comprising: a display screen, defining a through hole penetrating through the display screen in a thickness direction of the display screen; a light-transmission cover plate, disposed on the display screen and covering the through hole; and a seal ring, disposed in the through hole, and comprising: a bottom, disposed on the light-transmission cover plate; and an outer wall, connected to the bottom, wherein at least a part of the outer wall is disposed on the display screen; wherein the light-transmission cover plate is fixed on the display screen by an optical adhesive, a thickness of the seal ring is greater than a thickness of the optical adhesive, and the seal ring contacts with the display screen; wherein the seal ring further comprises a top disposed opposite to the bottom, and the top is further provided with a placement stand; and wherein the display screen further comprises a sidewall in the through hole; the seal ring further comprises an inner wall; the inner wall is away from the sidewall and connected to the bottom, and the outer wall is adjacent to the sidewall of the display screen; the placement stand is recessed from the top of the seal ring towards the bottom of the seal ring, and further connected to the inner wall. a display screen, defining a through hole penetrating through the display screen in a thickness direction of the display screen; a light-transmission cover plate, disposed on the display screen and covering the through hole; and a seal ring, disposed in the through hole, and comprising: a bottom, disposed on the light-transmission cover plate; and an outer wall, connected to the bottom, wherein at least a part of the outer wall is disposed on the display screen; wherein the light-transmission cover plate is fixed on the display screen by an optical adhesive, a thickness of the seal ring is greater than a thickness of the optical adhesive, and the seal ring contacts with the display screen; wherein the seal ring further comprises a top disposed opposite to the bottom, and the top is further provided with a placement stand; and wherein the display screen further comprises a sidewall in the through hole; the seal ring further comprises an inner wall; the inner wall is away from the sidewall and connected to the bottom, and the outer wall is adjacent to the sidewall of the display screen; the placement stand is recessed from the top of the seal ring towards the bottom of the seal ring, and further connected to the inner wall. a bottom, disposed on the light-transmission cover plate; and an outer wall, connected to the bottom, wherein at least a part of the outer wall is disposed on the display screen; wherein the light-transmission cover plate is fixed on the display screen by an optical adhesive, a thickness of the seal ring is greater than a thickness of the optical adhesive, and the seal ring contacts with the display screen; wherein the seal ring further comprises a top disposed opposite to the bottom, and the top is further provided with a placement stand; and wherein the display screen further comprises a sidewall in the through hole; the seal ring further comprises an inner wall; the inner wall is away from the sidewall and connected to the bottom, and the outer wall is adjacent to the sidewall of the display screen; the placement stand is recessed from the top of the seal ring towards the bottom of the seal ring, and further connected to the inner wall.