The purpose of this study is to investigate elementary school students’ safety knowledge, safety attitude and safety practice behavior to analyze the relations between them, and to find the factors influencing their safety practice behavior. The study method was conducted by using SPSS/SIN 21.0 program of 468 questionnaire surveyed from March. 1 to March. 15, 2018 in S city. As a result, elementary school students’ safety knowledge scored 23.21; attitude 3.58 points; safety practice behavior 2.92 points. Safety knowledge has positive correlation with safety attitude and safety practice behavior. Safety attitude, knowledge to be the factors influencing their safety practice behavior. These influential factors explained their safety practice behavior 23.3%. It is necessary for the educational institutions to develop and utilize the practice-oriented fusion education continuously to improve safety attitude and safety knowledge.