An analyte monitoring system, which can be used to monitor blood sugar, is provided with a sensor which detects a plurality of blood sugar levels in blood on the basis of a sampling interval, a meal data setting unit which sets information based on meal contents, and a sampling interval setting unit which sets the sampling interval of the sensor using the information based on meal contents set by the meal data setting unit. By predicting a fluctuation curve of the blood sugar level after a meal by information based on meal contents to thereby change the sampling interval, a fluctuation state of the blood sugar level can be efficiently monitored.
