A mobile information terminal includes: a storage storing sensor identification information and patient identification information, while associating with each other； a wireless communication interface receiving a connection request signal； and a processor, when the wireless communication interface receives the connection request signal from the sensor identified by the sensor identification information, determining whether the sensor identification information is associated with the patient identification information or not, and the processor denying establishment of a wireless connection with the sensor that is subjected to the determination, in a case where the sensor identification information that is subjected to the determination is not associated with the patient identification information, and establishing a wireless connection with the sensor that is subjected to the determination, in a case where the sensor identification information that is subjected to the determination is associated with the patient identification information.
