The present disclosure discloses an electronic table card, a fixed seat of an electronic table card and an electronic table card assembly. The electronic table card includes an electronic display screen and a protrusion disposed on the back of the electronic display screen, in which a clamping slot is respectively formed at both sides of the protrusion, opening directions of the clamping slots are opposite to each other, and an extending direction of each of the clamping slots is perpendicular to a direction from a top to a bottom of the electronic display screen.