The invention discloses a screw type ship unloader feeding head which comprises a feeding head body, wherein a leakage cover is connected onto the feeding head body and wraps the feeding head body; leakage holes allowing material to enter the feeding head body are formed in the leakage cover; the size of each leakage hole is equal to or less than the size of the maximum material conveyed by the feeding head body; the screw type ship unloader feeding head is characterized in that the leakage cover can block larger material out of the leakage cover, so that the larger material is prevented from entering the feeding head to a certain degree, the situation that the feeding head is blocked is avoided; and in addition, when the leakage cover is in contact with larger material, the leakage cover can scrap the larger material.