To provide an automatic sphygmomanometer in which biological information such as a blood pressure value can be concentrically controlled on line easily and at low cost.

As a blood pressure value is determined by a blood pressure determining means 84, a signal to indicate the blood pressure value is transmitted through a specified PHS telephone by a communication control means 86. The transmitted blood pressure value is received by a specified living body information concentric control device 12 to be processed, so the blood pressure value for each organism can be concentrically controlled. As a result, biological information such as the blood pressure value related to the organism can be concentrically controlled easily and at low cost.