The impact of the clay content,initial relative compactness,consolidation stress,consolidation stress ratio on the dynamic strength of reclamation silty sand in the eastern economic zone of Shantou city is studied by the dynamic triaxial test.The results show that the dynamic strength of reclamation silty sand increases with the silt content.The strength decreases 50% when the silt content increases from 0 to 18%.The dynamic strength does not monotonically increase with the increase of the clay content,and the critical value is 12%.The initial relative compactness has little influence on the dynamic strength.When the consolidation stress is less than 200 kPa,the dynamic strength will increase with the consolidation stress.The dynamic strength increases slowly when the consolidation stress is greater than 200 kPa.When the consolidation stress ratio is less than 2,the dynamic strength increases with the increase of consolidation stress ratio.