I. Introduction
Infants between the age of 6 months to 2 years old are rapidly growth and development. They begin with the ability of language, memory and thinking imagination. The external environment is full of curiosity to them. They like to imitate and Their cognitive things are not content with eye observation, but mainly through two-handed touch and taste. Due to the contradictory between lively and uncoordinated action [1], lacking of verbal communication skills while having the ability to crawl, walk and climb, infants at this stage are unpredictable and it is unable to control their actions. There are places in the home that pose potential dangers for infants: the edges of beds, angular tables and chairs, slippery kitchens and toilets, couches to climb, and so on. Parents at home cannot guarantee that infants are kept in sight every moment. When the parents are in the restroom and answering a telephone call, infants entering the above-mentioned dangerous area may be injured. In general, the smaller the baby, the greater the impact of external risk factors on them. Infant safety issues are trivial. These safe behaviors in infancy are infant safety. According to statistics, accidental injuries account for 26.1% of the total number of child deaths in China, and this number is still growing at a rate of 7% -10% per year [2]. Accidental injury has become the first killer in infants’ health. 52% of child accidents occur in home [3]. Therefore, how to monitor the activities of infants effectively, pre-warning the potential dangers, have a broad use of demand and market prospects.