Electric arc furnace cover and electric arc furnace

The invention belongs to the technical field of metallurgical machinery, and particularly relates to an electric arc furnace cover and an electric arc furnace. The electric arc furnace cover is mainly used for isolating a metal smelting electric arc furnace from the external environment and comprises a cover body and an isolating layer arranged on the inner surface of the cover body. A water inlet, a water outlet and cooling pipelines communicated with the water inlet and the water outlet are arranged on the two sides of the cover body, and the cooling pipelines are arranged in an S shape or an annular shape, so that the effect of rapidly cooling the furnace cover is achieved; at least one feeding hole is formed in the side of the cover body, and the feeding hole is square or circular, so that slag can be conveniently added into the electric arc furnace at any time in the smelting process; at least three electrode bar mounting positions are arranged in the middle of the cover body and are triangularly arrange