Under the situation that general sand-blowing vessel can not work in the extreme conditions of the heavy swell and long distance in Aojiangkou project,Wenzhou,we take the measures of remolding the sand-blowing barge,constructing onshore sand store coordinated with mud pump,high-pressure flush water and relay pump station etc.to fill the on-belt sand into bags and carry them to the sand store at the distance of 1 500 m,which overcomes the hardship of long-distance filling bags and achieves a great breakthrough.It may serve as reference for the filling-bag construction in the coastal areas with similar work conditions in China.