A display system, comprising a display unit and a pressure control unit, wherein the pressure control unit is configured to enable the display unit to expand or contract; the display unit includes a flexible display screen, the flexible display screen is connected with the pressure control unit, and the flexible display screen is configured to carry out the expanding or the contracting based on control of the pressure control unit; characterised in that the display unit further includes an elastic air mattress in a flat form attached to a rear housing of the flexible display screen, wherein the pressure control unit produces pressure which acts to blow up the elastic air mattress, and the elastic air mattress brings the flexible display screen to be converted from the contracting state into the expanding state; or the pressure control unit releases pressure, and the elastic air mattress contracts, and brings the flexible display screen to be converted from the expanding state into the contracting state to close down the information display; and a memory steel wire, the memory steel wire being arranged at the edge of the elastic air mattress. wherein the pressure control unit is configured to enable the display unit to expand or contract; the display unit includes a flexible display screen, the flexible display screen is connected with the pressure control unit, and the flexible display screen is configured to carry out the expanding or the contracting based on control of the pressure control unit; characterised in that the display unit further includes an elastic air mattress in a flat form attached to a rear housing of the flexible display screen, the pressure control unit is configured to enable the display unit to expand or contract; the display unit includes a flexible display screen, the flexible display screen is connected with the pressure control unit, and the flexible display screen is configured to carry out the expanding or the contracting based on control of the pressure control unit; characterised in that the display unit further includes an elastic air mattress in a flat form attached to a rear housing of the flexible display screen, wherein the pressure control unit produces pressure which acts to blow up the elastic air mattress, and the elastic air mattress brings the flexible display screen to be converted from the contracting state into the expanding state; or the pressure control unit releases pressure, and the elastic air mattress contracts, and brings the flexible display screen to be converted from the expanding state into the contracting state to close down the information display; and a memory steel wire, the memory steel wire being arranged at the edge of the elastic air mattress. the pressure control unit produces pressure which acts to blow up the elastic air mattress, and the elastic air mattress brings the flexible display screen to be converted from the contracting state into the expanding state; or the pressure control unit releases pressure, and the elastic air mattress contracts, and brings the flexible display screen to be converted from the expanding state into the contracting state to close down the information display; and a memory steel wire, the memory steel wire being arranged at the edge of the elastic air mattress.