With the implementation of environmental protection dredging project in rivers and lakes，the treatment and disposal of a large amount of dredging sediment has become a social concern. To solve the problem of sediment resources，the dewatered sediment from geo-tube bag in Baiyangdian ecological dredging pilot project was taken as the research object. Based on the analysis of sediment，river sand and vermiculite were used as amendments to improve the five main control indices of sediment，including pH，salt content，organic matter，textures and soil infiltration rate. The experimental results show that both river sand and vermiculite improve the sediment，but the sediment texture does not change significantly with the addition of vermiculite. Considering also the factors of economy and engineering，river sand is selected as the amendment. It is more suitable to add 25% to 30% of the sediment mass（dry mass），the texture of the improved afforested soil is basically within the range of loam soil，which is most suitable for plant growth. Besides，the other four main control indices such as pH，salt content，organic matter and infiltration rate can all meet the requirements of planting soil for greening stipulated in the code CJ/T 340-2016. Furthermore，the project application scheme is put forward for the Baiyangdian ecological dredging pilot project，which provides a new idea for sediment resources.