The utility model discloses a transformer oil drain valve and a transformer. The transformer oil drain valve comprises a fireproof cabinet body, an electric oil drain valve, a fireproof wire and a controller used for controlling the electric oil drain valve to be opened or closed. A first opening and a second opening are formed in the front end and the rear end of the fireproof cabinet body respectively, the electric oil drain valve is arranged in a cavity of the fireproof cabinet body, and an oil inlet and an oil outlet of the electric oil drain valve penetrate through the first opening and the second opening respectively and are fixed to the first opening and the second opening. A third opening is formed in the side face of the fireproof cabinet body, one end of a fireproof wire penetrates through the third opening to be electrically connected with the signal input end of the electric oil drain valve, and the other end of the fireproof wire is electrically connected with the signal output end of the controller. Opening or closing of the electric oil discharge valve can be remotely controlled, remote oil discharge is achieved, and the electric oil discharge valve can be preventedfrom being damaged by high temperature through the fireproof cabinet body.