The uniqueness of meromorphic functions sharing two sets with weigted value of one was dealt with.Seting S={ω∈C;aωn-n(n-1)ω2+2n(n-2)bω-(n-1)(n-2)b2=0},a,b being two nonzero numbers and abn-2≠2，if n≥11,f and g share S with weigted value of one,E—(∞,f)=E—(∞,g),then f≡g.