Based on the express way project on soft soil operated for 4 years,the information construction method is fully analyzed,such as inspection during the period of fill and preloading on soft soil,deformation of the pile of bridge,presetting flip-height,presetting compensatory fill for settlement,secondary excavation etc.. With the use of key control section in the inspection,the express way on soft soil can be constructed effectively. It does good to vehicles jumping at bridge approaches with the use of presetting flip-height,presetting compensatory fill for settlement,and secondary excavation etc.. The method of information construction is the key to the construction of express way on soft soil. Good effect is gained on the soft soil treated with plastic drainage belt combined with surcharge preloading. Under the condition of low embankment and shallow soft soil,deep cement mixing pile is a quick and effective method to meet the post construction settlement of express way. Under the condition of low embankment and shallow soft soil,it should be cautious of the soft soil treated with plastic drainage belt combined with weight preloading.