1. Influence of family atmosphere: whether the family atmosphere is harmonious or not will directly affect the relationship between sisters. If parents often quarrel or there is a tense and indifferent atmosphere in the family, this environment may cause estrangement and contradiction between sisters, thus affecting their relationship.
2. Parents' educational methods: parents' educational methods also have an important impact on sisters relationships. If parents are too partial to one of their children, or are partial to one party when dealing with disputes between sisters, it may lead to jealousy, dissatisfaction and resentment between sisters, which will affect their relationship.
3. Guidance of communication and understanding: parents play a key role in communication and understanding between sisters. If parents can actively guide the communication between sisters, help them learn to understand each other's feelings and needs, and how to resolve conflicts, then the relationship between sisters will tend to be more harmonious. On the contrary, if parents ignore the guidance in this regard, sisters may have strained relations due to the lack of effective communication.