Press bar structure of domestic oil press

The utility model discloses a press bar structure of a domestic oil press. The press bar structure comprises a press bar body; the exterior of the press bar body is provided with a press thread; one end of the press bar body is a coupling end; at least one sunk tangent plane is formed at one side, which is near the coupling end, of the surface of the press thread. According to the press bar structure of the domestic oil press, by forming the at least one sunk tangent plane on the surface of the press thread of the press bar body, when the press bar rotates without stop in a press barrel, oil which is bigger in diameter or higher in hardness is crushed through the at least one sunk tangent plane on the press thread firstly, so the phenomena of material blocking and material jamming are avoided.