Abstract: The present invention relates to a device for measuring resistance and internal resistance using resonant oscillation comprising: an output resonant oscillating unit having an output connectors connected to a target object to be measured resistance or internal resistance to form a closed circuit and causing the resonant oscillation in the closed circuit; an inductive pulse generating unit for generating inductive pulses according to a pulse frequency, so that generating an output induced current in the closed circuit; and a measurement unit. While there is an output induced current appeared in the output resonant oscillating unit will generate a measurement inductive current in the measurement unit and measured and calculated to determine the resistance value of the target object to be measured resistance or internal resistance.