The purpose of this study is to verify the validity and reliability of PSIS to provide basic data that helps to closely explore the causes and interventions of children’s sleep problems. A total of 239 mothers (116 males, 123 females) completed a self-report questionnaire, including measures parent-child sleep interaction, mother’s sleep quality, parental stress, and children’s problem behavior. For the collected data, exploratory factor analysis, confirmatory factor analysis, correlation analysis, and reliability analysis were performed through M-plus 8.0 and SPSS 23.0. The results of this study are as follows. First, as a result of exploratory factor analysis, it is finally confirmed as an 8-item, 2-factor model. )’ and 2 factors were named ‘Sleep Reinforcement’. Second, as a result of confirmatory factor analysis, the fit of the model was found to be excellent, and the validity of certification and reference validity were confirmed. This study suggests a simple and effective evaluation tool for evaluating the interaction between parents and children in sleep situations, rather than fragmentary related variables such as sleep time, and I think it will be useful to provide basic data onto sleep research in infants and young children. In addition, it is expected that this scale can be used as a parent education material that suggests what kind of attitude is appropriate to take in a child’s sleeping situation.