Benefiting from the unique layer structure and large interlayer spacing, the transition metal dichalcogenides have been regarded as promising anode materials to host K ions and widely explored in potassium ion batteries (PIBs). However, the low conductivity and large volume variation decline the cycling capacity and stability. It is still challenge to develop high performance anode to storage K⁺. Herein, the MoS₂ nanoparticles anchored onto graphene sheet were synthesized (MoS₂–C/rGO) through facile “one-step redox reaction” and following sulfidation method. Impressively, MoS₂–C/rGO displayed superb cycling capability with a high reversible capacity of 405.25 mAh/g after 100 cycles at 0.1 A/g, accompanied with remarkable rate performance, outperforming than MoS₂–C and MoS₂. Most importantly, the ultra-long working life over 2000 cycles with a stable capacity of 161.67 mAh/g at 2 A/g was achieved in MoS₂–C/rGO. The two-dimensional structure, rGO sheet and N, P co-doped C matrix of MoS₂–C/rGO play great role on providing abundant ions storage sites, increasing conductivity and suppressing volume expansion, leading to high specific capacity, superior rate performance and cycling stability in PIBs. The ex-situ XPS revealed the conversion reaction mechanism for MoS₂ during cycling. Accordingly, our work provides a new insight to design alternative anodes for PIBs and is significant to the application of the new generation secondary batteries.