1. Visual description: Onomatopoeic words can intuitively simulate sounds, actions or artificial objects in nature, so that readers or listeners can quickly construct corresponding auditory images through words, and enhance the vividness and vividness of descriptions.
2. Emotional expression: Onomatopoeia helps to convey the mood or atmosphere of the characters.
3. Rhythm and rhythm: The use of onomatopoeia in poetry, nursery rhymes, novels and other literary works can enrich the musicality and sense of rhythm of the text and make the language more rhythmic.