Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China
; Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China
; Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China
A consistent treatment based on the QCD sum rules at finite temperature has been established to calculate the J/Psi suppression in hot hadronic matter (HM) and quark-gluon plasma (QGP) respectively. We have found that the J/Psi suppression occurs in both hadronic matter and quark-gluon plasma, but a J/Psi mass shift of about 0.49 GeV exists in QGP background only. The results obtained by QCD sum rules and by potential model are compared.