1. Suitable age: According to the child's age and development stage, choose the appropriate content and method of sex education. Children of different ages have different abilities to understand sexual knowledge and concepts, so they should be given appropriate information according to their cognitive level and curiosity.

2. Open communication: Establish open, frank and trusted communication channels with children, so that children can ask questions and share their experiences at will. Respect children's opinions and privacy, and respond to children's questions in a correct, clear and appropriate way.

3. Scientific knowledge: provide accurate and scientific sexual knowledge and avoid wrong and vague information. Educate children in basic concepts such as human body structure, physiological changes, reproductive process, gender equality and gender identity, and emphasize respect for the rights and boundaries of others.

4. Emphasize safety and responsibility: teach children the importance and responsibility of sexual relations, and emphasize the legality, voluntariness and consent of sexual behavior. Remind them to avoid sexual assault and abuse and how to protect the health of themselves and others.

5. Respect individual differences: teach children the concepts of gender diversity and sexual orientation, and cultivate the concept of respecting others' gender identity and sexual orientation. Help them understand that everyone has the right to choose their own identity and relationships.

6. Healthy values: teach correct values and morals, and help children form positive sexual attitudes and healthy sexual attitudes. Emphasize the importance of intimacy, the value of love and respect, and remind them to pay attention to the development of emotions and the establishment of interpersonal relationships.

7. Long-term concern: Sex education is a long-term process, which requires continuous attention to children's growth and development. Parents should provide continuous support and guidance to meet the needs and doubts of children at different stages.

Sex education should be a positive, positive and comprehensive process, aiming at helping children to form healthy sexual concepts, good sexual attitudes and correct sexual decision-making ability. If parents feel uncertain or confused, they can seek the support and guidance of professional sex education resources or consulting institutions.