The stone column and surrounding soil form the composite foundation,and the stone column itself can be taken as the vertical drainage body to accelerate the consolidation of surrounding soft soil.This method can improve ground in a fast and environmentally friendly way.However,because of the restriction of construction method,this method cannot be used in slurry (vane shear strength less than 20 kPa) and in height restriction condition.This article introduces a new bottom-fed vibro-stone column,which forms the stone column in soft foundation with good quality.This method also break the barrier of height restriction of airport by extension tubes to reduce the device height.