The invention relates to the method used common copper electrode to measure chargeability. It includes the following steps: using common copper electrode while not electrifying for the chargeability measurement, measuring its contact potential and ground natural potential and storing it; using common copper electrode to measure chargeability, correcting the measured value by correction formula togain chargeability. The invention overcomes the traditional demand of must using non-polarizing electrode in chargeability measurement to make high density chargeability measurement be able in hard bedrock outcrop, enlarge its using range.