The invention discloses a head cover decoration structure, an electric appliance and a floor-standing air conditioner. The head cover decoration structure comprises a head cover of which the upper endis connected to a decoration ring, and the middle part of the decoration ring is hollow; the inner edge of the upper end of the decoration ring is provided with at least one light ray outgoing lug boss in a downward extension manner; and the light ray outgoing lug bosses are used for refracting or reflecting light rays, and the widths of the light ray outgoing lug bosses are progressively increased according to the preset angle. According to the head cover decoration structure provided by the invention, the light rays are refracted or reflected through the light ray outgoing lug bosses, and aclosed light source cavity is not required; an electroplating ring and a light source are not necessary, either, and the manufacturing cost is reduced; and the problem that the implementation cost ofa head cover component using the light rays for improving the visual effect of appearance is high in the prior art is solved.