Liquid heater

The utility model relates to the field of life electric appliances, in particular to a liquid heater. An operation panel is arranged on the shell, a control panel is arranged on the inner side of the operation panel in the shell, keys and key holes are arranged on the operation panel, the keys comprise key columns and cantilevers, the key columns are connected with the inner walls of the key holes through the cantilevers, and a surface patch is pasted on the outer surface of the operation panel. One surface, facing the operation panel, of the cantilever is positioned in a sticking surface of the surface sticker on the operation panel; and one surface, facing the operation panel, of the key column is in contact with the surface sticker. According to the utility model, the mounting structure of the keys on the operation panel is improved, so that the fingers are blocked, the cantilever is not easy to touch by the fingers, and the cantilever cannot be directly damaged by the fingernails, thereby ensuring the per