The aim of this study was to explore the factors influencing students' water high-risk practices.24 participants(18 students, 3 lifeguards, 3 swimming teachers)were interviewed by means of semi-structured interview method based on the grounded theory.The interview materials were analysed through open coding, axial coding, and selective coding in turn.The results show that there are two main categories of influential factors, personal factors and environmental factors.Personal factors contain six subcategories, water safety knowledge, water safety skills, risk perception, drowning experiences, ...