The purpose of this study is to investigate utility smartphone APP using about elderly persons. A Questionnaire of intention to utility smartphone using about elderly persons was used a tool to collect raw data and to do the survey. This study researched by literature review and questionnaires method. A total of 200 questionnaires, 181 effective recycling questionnaires and the effective recovery rate is 90.5%. Descriptive statistics and chi-square test were used to analyze the collection of questionnaires.