A physiological information processing apparatus is to be communicatively connected to a plurality of physiological information sensors each of which is configured to acquire physiological information data of a subject being tested. The physiological information processing apparatus is configured to: receive first physiological information data from a first physiological information sensor of the plurality of physiological information sensors, in an xth first subframe (x: natural number) of a plurality of first subframes divided from an nth main frame (n: natural number)； and receive the first physiological information data from the first physiological information sensor, in an xth second subframe of a plurality of second subframes divided from an mth main frame (m: natural number).
