The following are 3 years old and above the baby should master the basic knowledge, take precautions is always no mistake, quickly look at your baby is not all will it! 3~4 years old 1. not to eat things given by strangers, do not follow strangers; 2. in the reminder can pay attention to safety, do not do dangerous things; 3. in public places, when lost, can to the police or the relevant personnel to say their own names and parents, telephone numbers and other simple information. 4~5 years old 1. Knows not to move alone in public places away from the sight of adults; 2. Recognizes common safety signs and can follow safety rules; 3. Can take the initiative to avoid danger when playing sports; 4. Knows simple ways to ask for help. 5~6 years old 1. Do not open the door to strangers without adult’s permission; 2. Can consciously follow basic safety rules and traffic rules; 3. Can pay attention to safety when playing sports and do not cause danger to others; 4. Know some basic knowledge about disaster prevention.