The utility model relates to a sucked type luminous and LED light strobe electric signboard, and belongs to the technical field of power supply maintenance equipment The technical scheme is that a signboard luminous layer (4) is fixedly disposed on the upper part of a signboard bottom layer (5), an LED lamp is disposed on the upper part of the signboard luminous layer, an air sucker (3) is disposed on the lower part of the signboard bottom layer, and a first power supply (2) and a second power supply (6) are respectively disposed on two sides of the lower part of the signboard bottom layer (5). The first power supply is an AA battery or a USB charging power supply. The second power supply (6) is a rechargeable lithium battery. The LED lamp is a stroboscopic lamp which can change colors. The signboard is fixed by the sucker, and the signboard can tightly contact with a plurality of types of materials and can be reused. The high brightness LED which is energy saving is used as strobe light. The signboard is characterized by high brightness, low power consumption, multiple angles, and easy placement. The signboard can change colors, warning effect is outstanding, and is simple in structure, reliable in connection, flexible in operation, and convenient in carrying.