A drinking behavior monitoring device is provided which comprises a stress level detection sensor (300) detecting a stress level of a baby (20), a suction frequency detection sensor (200) detecting a suction frequency during a feeding of the baby and an analyzer (400) analyzing a drinking behavior of a baby based on the detected stress level and the detected suction frequency. The analyzer (400) compares the analyzed drinking behavior with a typical or predetermined drinking behavior and can output a notification based on the analyzed drinking behavior.
