The invention discloses a GSM short message-based household alarm system, including a power module, a single-chip microcomputer master control module, a GSM communication module, a sensor front-end acquisition module. An audible and visual alarm module and a liquid crystal display module. When the sensor front-end acquisition module detects an abnormal signal, the single-chip microcomputer mastercontrol module receives a signal from a corresponding sensor pin and compares the signal with information prestored in the single-chip microcomputer, judges an alarm type, and then transmits an alarmsignal to the GSM communication module, and finally, the GSM communication module sends the alarm signal to a preset mobile phone number of a user in the form of a short message, thereby prompting theuser to take corresponding measures. According to the GSM short message-based household alarm system, through introduction of a GSM short message module, when abnormality occurs at home, a short message can be automatically sent to an owner or property management personnel to give an alarm, so that household conditions are known at first time, thereby bringing great convenience, timeliness and safety to life of people.