Flower like Co-doped manganese oxide（Mn1-xCoxO） lithium ion battery anode material was synthesized by co precipitation method in the micro channel reactor，using Mn（CH3COO）2·4H2O，Co（CH3COO）2·4H2O and C2H2O4·2H2O as raw materials.X-ray diffraction（XRD），scan electron microscopy（SEM） and X-ray photoelectron spectroscopy（XPS） were used to characterize the structure，morphology and elemental state of Mn1-xCoxO electrodes.Galvanostatic charge-discharge test and electrochemical workstation were carried out to investigate the effect of Co-doping amount on electrochemical perfor mance of Mn1-xCoxO as an anode material for lithium ion batteries.When the amount of Co-doping increased，Mn1-xCoxO and its precursor all evolved from rod like to flower like，and the capacity first increased and then decreased.As synthesized Mn0.95Co0.05O delivered a discharge capacity of 496.7 mA·h/g after 200 cycles at 5C rate，and its discharge specific capacity was increased by about 40.0% compared with undoped MnO，which showed good electrochemical performance.