1) When activated with activating agent, the active carbon which would be used as a anode mateterial of air electric cell, posessed higher air absorption power, lower electric resistance and lower ash content than that activated with stem. But the Ph of active carbon varies with kinds of activatingagents. 2) The optimum temperature was about 800°C, of which repeating times as 2-5 being sufficient. 3) The activating agents used were selected so as to be cheap and easily obtainable for industrial purposes. 4) From the results oftained, the active carbon from bamboo was superior to that from wood in its. characteristics, especially in continuous discharge period, which was 8 hour larger than that of marketed active carbon. 5) From the results of identifying the quality of active carbon for air electric cell by the method of H₂O₂, that from Nemagari-dake was best. 6) When activating agent added, the active carbon from Azumane-sasa was generally superior to that from Nemagari-dake in air adsorbing power the cause of which is now being investigated. 7) The electric resistance varies with preparing methods. As a whole the active carbon from black charcoal point out higher value.