Research conclusions:(1)In Dian Lake area，the soft soil foundation is based on soft clay，and using the cement soil plle 1S feaSlble.(2)Silty soil foundation mainly should strengthen the process control，the sections where the pile length is longer and engineering quality requirements is higher can use multi mixing cement mortar pile.(3)In soft soil foundation of peat soil，the pile tests must be carried out，especially in the high water content，high content of humus area according to the experiment the design can be strengthened，and using CFG pile，prestressed concrete pipe pile reinforcement measures treatment is more prudent. (4)To the pipe pile reinforcement，the lateral stability is analyzed，so as to avoid the rigid pile structure under lateral pressure and tilt.(5)In deep soft soil area，the settlement is very high， or the construction site is limited. It is necessary to take the measures of the pile-slab structure.(6)The research results are widely used in soft soil foundation treatment in mountainous areas.