Inst High Energy Phys, Beijing 100039, Peoples R China
; Univ Three Gorges, Dept Phys, Yichang 443000, Peoples R China
; Chinese Ctr Adv Sci & Technol, World Lab, Beijing 100080, Peoples R China
In the light of the Sturm-Liouville theorem, the Levinson theorem for the Schrodinger equation with both local and non-local cylindrically symmetric potentials is studied. It is proved that the two-dimensional Levinson theorem holds for the case with both local and non-local cylindrically symmetric cut-off potentials, which is not necessarily separable. In addition, the problems related to the positive-energy bound states and the physically redundant state are also discussed.