A large amount of dredging material mainly composed of white clay is dredged during the construction of berths 7#-10# in Tieshan Port area.Using white clay as backfill material can save on disposal costs and backfilling costs.However,white clay has the characteristics of expansive soil,and improper use can have adverse effects on the engineering quality.Base on the results of laboratory test and typical construction,this paper proposes suggestions for the backfill elevation and improvement methods for white clay,the filling performance of improved soil,and applicability of dynamic compaction.It has a guiding implications for the fair dealing of white clay as backfill material and foundation reinforcement treatment in Tieshan Port area.