The invention discloses a smart home control system based on the NB-IOT. The system comprises an independent comprehensive environment monitor, a cloud intelligent decision platform and controlled electrical appliances. According to the invention, an NB-IOT module is used for replacing the traditional WIFI module or the ZigBee module to carry out wireless data transmission; the WiFi module consumes much power, so service lifetime of device cells is reduced, the cost is high and resources can be easily wasted; the ZigBee module is suitable for short-distance transmission, and a ZigBee wirelessgateway needs to be arranged or connected to a WiFi router nearby, so the configuration is complex; the NB-IOT module is advantaged by low power consumption, low cost, wide covering range and big connection, so the NB-IOT module is easy to operate with no need to carry out complex WiFi configuration; and on the other hand, the controlled electrical appliances are capable of automatically adjustingoperation parameters to achieve objects of improving the environment or saving energy according to environment monitoring data without manual intervention completely, so monitoring and management canbe easily achieved, and convenient, energy-saving, safe and comfortable high-level comprehensive intelligent live is achieved for people.