This study aims to deeply understand the effect of excessive care on childrens happiness threshold, by conducting an in-depth exploration and analysis. We systematically dissect how excessive care changes the happiness threshold of children and further elaborately explain how this impact diffuses into childrens psychological, emotional, social, and learning domains. In the introduction section, we provide a comprehensive and in-depth introduction to the research theme, explaining in detail the academic definition of the happiness threshold, and clarifying the core objectives and its importance of this research. According to the results of the study, we found that excessive care might increase the happiness threshold of children, making them have higher expectations for their parents love. This suggests that there is a significant causal relationship between excessive care and the happiness threshold. The impact of having a higher happiness threshold on children in psychological, emotional, social, and learning domains is multi-faceted and profound. However, we found that it is possible to find methods to balance care and the happiness threshold through implementing some effective strategies. In the conclusion section, we summarize the main findings of the research and also propose suggestions for future research directions and fields. We hope that this research can enhance the publics understanding of the issue of excessive care and the childrens happiness threshold, thus providing a reference for improving childrens happiness and quality of life. Besides, we also look forward to more researchers participating in the research in this field in the future to further deepen the understanding of this issue, promote the improvement of the related theoretical framework, and provide more effective strategies to solve the problem of excessive care and childrens happiness threshold.