Emily Dickson's Over the Fence was a novel set in a small town. It mainly described the disputes and conflicts between four families in the small town in the face of trivialities and neighborhood relations. The main theme of the novel could be understood from the following aspects: The importance of family: The four families in the novel all face family problems, including marriage, children, property, etc. The author emphasized the importance of family and the mutual support and understanding between family members by describing the stories of these families. 2. The complexity of the neighborhood relationship: The neighborhood relationship in the novel is very complicated. There are contradictions and misunderstandings between different families. Through these stories, the author reveals the complexity of neighborhood relationships and how to solve problems through communication and compromise. 3. The kindness and beauty of human nature: Every character in the novel has the kindness and beauty of human nature. They can take positive actions to seek solutions to problems in the face of difficulties and conflicts in life. The author emphasized the kindness and beauty of human nature through the stories of these characters. The reality and cruelty of life: Although the story of the novel takes place in a seemingly beautiful town, the reality and cruelty of life still exist. Through these stories, the author reveals the reality and cruelty of life and the real problems that people need to face.