An living body information collecting apparatus having a shape suitable for being worn in the external auditory meatus of the human body, and having a sensing part for collecting living body information from the external auditory meatus is provided. In addition, a blood-pressure meter is provided, wherein the blood-pressure meter includes: a frame part including a first arm and a second arm that are opposed to each other a pressure applying part provided on at least one of a side of the first arm opposed to the second arm and a side of the second arm opposed to the first arm and a detection part for detecting a pulse wave.
