At present,China is accelerating the landscape planning and construction work.Based on the Double Carbon background,the research on carbon emission in the process of landscape construction,operation and maintenance urgently needs to be improved further.By studying the relationship between landscape and carbon emission in the design stage,this paper proposes low-carbon landscape design ideas under the double carbon background from the aspects of spatial layout,drainage mode,material selection,planting design as well as later operation and maintenance,which could provide reference for carbon emission reduction in landscape planning and construction in China.