Monguor has five vowels: /a, ɑ, æ, e, ɛ, ə, i, ɪ, o, ɔ, u, ʊ/.
| Bilabial | Labiodental | Alveolar | Retroflex | Alveolo-palatal | Palatal | Velar | Uvular | ||
|---|---|---|---|---|---|---|---|---|---|
| Stop | voiceless | p | t | c | k | q | |||
| voiced | b | d | ɟ | g | ɢ | ||||
| Affricate | voiceless | t͡s | ʈʂ | t͡ɕ | |||||
| voiced | d͡z | ɖʐ | d͡ʑ | ||||||
| Fricative | ɸ | f | s | ʂ | ɕ | ç | x | χ | |
| Nasal | m | n | ɲ | ŋ | |||||
| Approximant | ʋ | l | j | w | |||||
| Trill | ʙ | r | ʀ | ||||||