MCMB is the most commonly used anode for lithium-ion secondary cell. Good MCMB charge/discharge cycle stability is one of the most important criteria for reliable and long-lived lithium-ion battery operation. In this study, the cycling stability of a lithium-ion secondary cell have been studied. MCMB was made by the directly solvent extraction method. After the MCMB is formed by heat treatment the measurement of capacity and efficiency were carried out.