The invention discloses a transformer oil drain valve and oil tube connector, which comprises a connecting plate, the connecting plate is provided with a plurality of screw holes, and the screw holes have a variety of sizes. The connecting plate is provided with an oil drain hole, the oil drain hole is arranged in the center of the connecting plate, the oil drain hole is connected with an oil drain tube, one end, which is far from the connecting plate, of the oil drain tube is connected with a rubber oil drain tube, and the oil drain tube is connected with the rubber oil drain tube through a male and female connection. The connecting plate is elliptic, rectangular or round. Transformer oil can be prevented from being in contact with the air and being damped, foreign matters can be prevented from entering the transformer oil, and the safety of the transformer oil is greatly increased; the oil is prevented from spilling out to stain surrounding equipment and the ground when being drained out of a transformer, so the surrounding equipment and the ground are cleaner and more sanitary; a specially assigned person does not need to be assigned to hold the oil tube or look after an oil-receiving bucket, so manpower and material resources are saved.