In civil construction frequently encountered problems in soft soils, such as lowbearing capacity and large settlement if given the burden. It is because the soft soilgenerally has low shear strength, low permeability and large compressibility. Thestudy was conducted to compare the speed of settlement and stability problemsembankment on soft soil due to the method of preloading and vertical drains. Theuse of the method of preloading and vertical drains on the embankment canimprove the stability of the construction.