This paper presents an analytical study of the non-Hermitian mobility edge (ME) in the complex plane, revealing that it forms a ring structure, termed the "mobility ring" (MR). The universality of MR is verified through three cases: the Hermitian limit, PT-symmetry protection, and non-PT-symmetric systems. The MR is shown to separate extended and localized states in the complex plane, with the extended states inside the ring and localized states outside. The MR is derived using Avila's global theory, which characterizes the localization properties through the Lyapunov exponent (LE). The results show that the ME forms a ring structure in the complex plane, with the radius depending on the quasiperiodic strength and other parameters. The study also demonstrates that the self-duality method has limitations in calculating the critical point in non-Hermitian systems, as it cannot capture the full complexity of the MR. The paper further shows that multiple MRs can emerge in non-Hermitian systems, with the maximum number of MRs determined by the quasiperiodic parameter. The findings highlight the unique properties of non-Hermitian systems and their behavior in the complex plane, providing a new perspective on the mobility edge in non-Hermitian physics.This paper presents an analytical study of the non-Hermitian mobility edge (ME) in the complex plane, revealing that it forms a ring structure, termed the "mobility ring" (MR). The universality of MR is verified through three cases: the Hermitian limit, PT-symmetry protection, and non-PT-symmetric systems. The MR is shown to separate extended and localized states in the complex plane, with the extended states inside the ring and localized states outside. The MR is derived using Avila's global theory, which characterizes the localization properties through the Lyapunov exponent (LE). The results show that the ME forms a ring structure in the complex plane, with the radius depending on the quasiperiodic strength and other parameters. The study also demonstrates that the self-duality method has limitations in calculating the critical point in non-Hermitian systems, as it cannot capture the full complexity of the MR. The paper further shows that multiple MRs can emerge in non-Hermitian systems, with the maximum number of MRs determined by the quasiperiodic parameter. The findings highlight the unique properties of non-Hermitian systems and their behavior in the complex plane, providing a new perspective on the mobility edge in non-Hermitian physics.