This was an research attempted by writers and other 10 junior of department care and education for young children. The main purpose was to inspire pre-occupational and in-job nursery nursers' research abilities. 30 preschool children were interviewed and 30 parents were requested to fulfill questionnaires in order to understand young children's death concept and its influencial factors. The results showed that parts of 3~5 years old children owned mature death concept, more 3-year-old children who showed no mature death concept was due to their undeveloped death judgment. Death experiences, commercial media, parents' death concepts, religious belief, open talk about death influenced young children's death concept yet only few reach remarkable level.