The utility model relates to the field of smart wearable devices, in particular to a human body condition and behavior monitoring alarm system. The human body condition and behavior monitoring alarm system comprises a master chip, a display, a temperature and humidity sensor, a blood pressure sensor, a brain wave sensor, an electronic gyroscope, a heart rate sensor, a pressure sensor, a hydrogen sulfide sensor, a noise detection module, a Bluetooth module and a power supply module. The human body condition and behavior monitoring alarm system is capable of monitoring both physical health conditions and behavior conditions of human bodies.