汉语拼音中的声母和韵母是汉语音节的基础组成部分。
声母，即音节开头的辅音，汉语拼音中的声母共有21个：
b p m f d t n l g k h j q x zh ch sh r z c s
韵母，即音节中声母后面的部分，包括元音和复韵母，汉语拼音中的韵母共有35个：
单韵母：
a e i o u ü
复韵母：
ai ei ao ou iu ie üe er an en in un ün ang eng ing ong
鼻韵母：
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