There is provided a power amplifying apparatus with dual-current control mode, including: a transistor mirror circuit adjusting currents respectively flowing through a main path and a mirror path connected in parallel to a power source terminal; a resistor mirror circuit adjusting the respective currents of the main path and the mirror path; a current controlling unit controlling a control current flowing through the main path with a pre-set constant current; a voltage adjusting unit providing a bias adjustment signal that corresponds to a difference voltage between a first voltage of a first node on the main path to which a current is output from the resistor mirror circuit and a second voltage of a second node on the mirror path to which a current is output from the resistor mirror circuit; and a bias circuit unit adjusting a bias of a power amplifying unit.