汉语拼音的韵母共有37个，按结构可以分为单韵母、复韵母和鼻韵母；按开头元音发音口形可分为开口呼、齐齿呼、合口呼、撮口呼。
    In Chinese Pinyin there are 37 finals; according to their structures they may be divided into single finals, compound finals and nasal finals; and according to mouth shapes when pronouncing the start vowels, they may be divided into open-mouths, even-teeth, close-mouths, and pursed-mouths.

Finals：a   o   e    i    u    ü    er    ai    ei    ao    ou    ia    ie    ua    uo    üe    iao    iou    uai    uei    an    en    in
ian    uan    uen    ün    üan    ang    eng    ing    iang    uang    ueng    ong    iong

	开口呼Open-mouth	齐口呼Even-teeth	合口呼Close-mouth	撮口呼Pursed-mouth
单韵母Single final	-i	i	u	ü
	ɑ
	o
	e
	er
复韵母Compound final	ɑi	iɑ	uɑi
	ei	ie	uei	üe
	ɑo	iɑo	uɑ
	ou	iou	uo
鼻韵母Nasal final	ɑn	iɑn	uɑn	üɑn
	en	in	uen	ün
	ɑnɡ	iɑnɡ	uɑnɡ
	enɡ	inɡ	uenɡ
	onɡ	ionɡ