Abstract: Coastal saline soil is a special soil with poor engineering properties such as collapsible and corrosive.How to treat it as a resource for roadbed fillings have been one of the important geotechnical engineering topics in the highway construction of coastal areas.An experimental research on coastal saline soils stabilized by lime,cement and a new polymeric solidified material of SH was conducted.The influences of multiple factors,including curing ages,hydrated water types,soaking water types and soil salt contents,on the unconfined compressive strengths and water-related stability of stabilized saline soils were discussed.It was shown that unconfined compressive strength and water-related stability of stabilized coastal saline soils attained corresponding engineering standards and that it could be used as roadbed fillings.