Abstract: As the special stucture, the reloading and unloading characteristic during the volume expansion of high stove is indescribable to the reconstruction of common building. Based on the characteristic of expansion engineering of high stove,some problems such as the expansion approach, the loading state and it's alterant characteristic, inchluding it's impact on the settlement of the foundation soils has been discussed in detail. Considering some successful examples had been completed in the volume expansion of high stove, the primary geotechnical engi-neering problem which need to be noticed in foundation evaluation on natural subgrade has been mentioned.