Abstract: At present, soil salinity is usually measured by soil extracts method, this traditional method is complicated while in-situ measurement is more convenient. However, the in-situ method has not been widely applied yet. In this study, in-situ soil salinity measurement was carried out using the EC-Probe instrument in Bashang region of Hebei Province. The conversion model between soil salinity and conductivity was established by both in-situ and laboratory measurements. Based on this conversion model, the soil salinity of different land use types at the same depth was determined, and the author analyzed soil salinity distribution rules in different depths. The results showed that the soil salinity order was: marshland> farmland> forest> floodplain> grassland. Soil salinity in all soil types did not reach the soil salinization threshold, however, the risk of salinization in marshland and farmland was obviously higher, which required the strengthening of ecological protection.