The proposed Circular Electron Positron Collider (CEPC) with a center-of-mass energy √s =240 GeV will primarily serve as a Higgs factory.Additionally,it will offer good opportunities to search for new physics phe-nomena at low energies,which can be challenging with hadron colliders;however,these discoveries are highly mo-tivated by theoretical models developed to explain,e.g.,the relic abundance of dark matter.This paper presents sens-itivity studies for chargino pair production by considering scenarios for both a Bino-like and a Higgsino-like neut-ralino as the lightest supersymmetric particle and using a full Monte Carlo (MC) simulation.By assuming systemat-ic uncertainties at the level of 5％,the CEPC has the ability to discover chargino pair production up to the kinematic limit of √s/2 for both scenarios.The results have a minor dependence on the reconstruction model and detector geometry.These results can also be considered as a reference and benchmark for similar searches at other proposed electron-positron colliders,such as the Future Circular Collider ee (FCC-ee) or the International Linear Collider(ILC),given the similar nature of the facilities,detectors,center-of-mass energies,and target luminosities.