Abstract: The soil corrosivity affects the safe and economical operation of buried pipeline, The complexity of soil, hydrological and geological conditions along Sichuan-East Gas Pipeline may make the soil corrosion easily occurred, The type and degree of soil corrosion along this pipeline were obtained after field coupon testing and field measurement of soil physicochemical properties were carried out, The results showed that the corrosivity of soil along this pipeline was high, For more than 1/3 pipe sections in this pipeline were laid in corrosive soil, It is very important to implement effective anticorrosion protection for those pipe-sections.