1. Give children enough time: Children may speak slowly because they need more time to think and express their ideas. Parents should give their children enough time to express themselves and don't rush to interrupt them.

2. Encourage children to speak: Parents should always encourage their children to speak and let them know that their voices are heard and valued. Children can be encouraged to speak by praise, encouragement and reward.

3. Interaction with children: Interaction with children can promote their language development. Parents can play games, read books and sing songs with their children, so that children can learn languages in a relaxed and pleasant atmosphere.

4. Provide language stimulation: Parents can provide rich language stimulation, such as reading books, listening to music and watching movies, so that children can be exposed to more language materials and improve their language ability.

5. Seek professional help: If the child's slow speech seriously affects his life and study, parents should seek professional help, such as a child speech therapist.