Oil duct communication device

The invention discloses an oil duct communication device, belonging to the technical field of down-hole drilling tool equipment. The oil duct communication device is characterized in that a first joint part comprises a first shell, a first joint and a first central pipe; the first joint is provided with a first medium channel and a first central hole; a first valve core thimble is fixed in the first medium channel; the first valve core thimble is provided with a first annular groove; a first O ring is sheathed on the first annular groove; the second joint part comprises a second shell, a second joint and a second central pipe; the second joint is provided with a second medium channel and a second central hole; a second valve core thimble is fixed in the second medium channel; the second valve core thimble is provided with a second annular groove; a second O ring is sheathed on the second annular groove; a circular ring is connected to a joint pipe; and one end of the joint pipe is inserted into the first central hole, and the other end is inserted into the second central hole. The oil duct communication device can implement automatic communication of the oil duct, prevents the down-hole motor from damage, and effectively ensures the stable operation of the down-hole motor.