A biological information processing system, a server system, an information processing method, and the like, which are capable of correctly imparting the intention of a transmitter of information to a receiver of the information without hurting the receiver's feeling, are provided.A biological information processing system 100 includes a mental and physical information specification unit 110 that specifies mental and physical information on the basis of biological information measured by a sensing unit 310, a transmission and reception unit 130 that performs transmission and reception of information, and an information conversion unit 150 that performs a converting process of a presentation mode of received information on the basis of contents of the received information received by the transmission and reception unit 130, mental and physical information of a transmitter, and mental and physical information of a receiver.
