The utility model discloses a scour prevention be in milk bag for submarine pipeline suspended span is administered comprises a grout bag body, a grout bag body be A type structure, and level is provided with one at least intermediate structure layer inside it, the intermediate structure layer includes along the inboard horizontal enhancement layer of round that sets up of grout bag body and sets up grid -shaped between the horizontal enhancement layer inner circle strengthens the lacing wire, the bottom of grout bag body is provided with grout mouth and bionic grass, the top of grout bag body is provided with get pulp mouth and reserve intermediate layer. The utility model discloses can realize the quick improvement of submarine pipeline suspended span to can avoid erodeing the pipeline secondary suspended span that produces because of the sea bed subsides with the ocean current, promote the effect that the suspended span was administered, reduce the cost that the submarine pipeline suspended span was administered, reduce the operation on the sea risk.