The utility model provides oil discharge apparatus, and belongs to a petroleum production device. An oil discharge pipe is installed inside a casing; an insulating cover plate is hinged with the casing outside an inner end opening of the oil discharge pipe; a sealing partition board is mounted between the inner end of the oil discharge pipe and an inner wall of the casing; an upper end opening of a pipe communicated with the middle part of the oil discharge pipe is arranged outside the casing; a bent pipe is communicated with the casing; and an air discharging pipe is communicated with either the bent pipe or the casing. The oil discharge apparatus can be installed on an oil reservoir and realize oil discharge by inserting an oil outlet pipe into the oil discharge pipe. The apparatus has the advantages of high safety in use and convenience in operation.