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The lepton identification is essential for the physics programs athigh-energy frontier, especially for the precise measurement of the Higgsboson. For this purpose, a Toolkit for Multivariate Data Analysis (TMVA) basedlepton identification (LICH) has been developed for detectors using highgranularity calorimeters. Using the conceptual detector geometry for theCircular Electron-Positron Collider (CEPC) and single charged particle sampleswith energy larger than 2 GeV, LICH identifies electrons/muons withefficiencies higher than 99.5% and controls the mis-identification rate ofhadron to muons/electrons to better than 1%/0.5%. Reducing the calorimetergranularity by 1-2 orders of magnitude, the lepton identification performanceis stable for particles with E > 2 GeV. Applied to fully simulatedeeH/$\mu\mu$H events, the lepton identification performance is consistent withthe single particle case: the efficiency of identifying all the high energyleptons in an event, is 95.5-98.5%.

Lepton identification at particle flow oriented detector for the future $e^{+}e^{-}$ Higgs factories