The utility model provides a large -scale indirect extrustion owner scissors hydro -cylinder oil supply unit, including transition valve piece, rubber tube, recipient, transition entire body, blind flange, flexible cylinder body, flexible oil pipe and back beam, the main scissors both sides of transition valve piece fixed mounting on the extruder recipient, transition valve piece is big chamber of sealing connection owner's scissors and loculus respectively, and transition valve piece lower part is respectively through four rubber tubes and transition entire body sealing connection, the transition entire body is passed through the clamping ring and is connected on the recipient flexible oil pipe one end and transition entire body sealing connection, the flexible oil pipe other end passes flexible cylinder body and outside the extension. The utility model provides a main scissors holds the room along with the extrusion and moves and but want the difficult problem of high -pressure fuel feeding. During it is applied to large -scale indirect extrustion machine, realize removing the fuel feeding of main scissors hydro -cylinder to large -scale reverse aluminium extruded press, satisfy that its is large -traffic, high pressure and high ambient temperature's operation requirement to the improve equipment reliability, decreasing failure rate.