A biological information acquiring system of the invention includes a biological information acquiring apparatus having a biological information acquiring section, and a magnetic field generation section, and the biological information acquiring apparatus includes: a power source section capable of supplying power for driving the biological information acquiring section a magnetic field detection section which generates and outputs a magnetic field detection signal according to a detection result of a magnetic field generated from the magnetic field generation section a first switching control section which performs control so as to switch between an on state and an off state, or maintain the on state or the off state of a first switch section connected to the power source section based on an output state of the magnetic field detection signal and a second switching control section which performs control so as to switch between an on state and an off state, or maintain the on state or the off state of a second switch section connected between the first switch section and the biological information acquiring section, based on the output state of the magnetic field detection signal.
