The invention relates to an intelligent home system based on Internet of Things. The system comprises a wireless network communication unit used for realizing wireless communication with Internet of Things, a central processing unit, an environmental sensing system used for detecting ambient temperature and humidity and harmful gases, a control and drive circuit used for controlling working condition of intelligent household electrical appliance, an anti-theft sensing system, a display screen used for displaying ambient temperature and humidity at real time, an alarm system used for environmental anormaly alarm or anti-theft alarm and a user identification system used for voice or fingerprint identification. Functions that can be realized and provided service are as follows: online network service all the time; connection with the Internet at any time; and convenient condition provided for telecommuting. Security protection: illegal intrusion, fire, gas leak and emergency call can be monitored at real time through intelligent security protection. Once there is an alarm situation, the system sends alarm information to the center automatically and simultaneously starts related electric appliance to enter an emergency linkage state so as to realize active defense.