An electronic apparatus for conditionally power supplying is provided. In the electronic apparatus, an external connection port is embedded on a surface of a case for electrically connecting to an external device, and includes plural exposed terminals including one power pin. First and second detection electrodes are disposed on the surface of the case and normally maintain in broken-circuit. When the first and the second detection electrodes are in a wetting condition, the first and the second detection electrodes are in short-circuit. A switch is electrically connected to a power module and the power pin. A control module detects that the first and the second detection electrodes are in short-circuit or in broken-circuit, and drives the switch to make the power module output power to the power pin when the first detection electrode and the second detection electrode are in broken-circuit.