There are many conservative features of Min dialect,but we should also pay attention to its innovations.From the synchronic phonological system and the diachronic changes,we argue that there are many innovative sound changs of in-itials,finals and tones in Min dialect by comparison to Mandarin Chinese and other Chinese dialects.First of all,from the consonant of view,there are not only some common phonetic changes such as palatal phonetic changes in Min dialect,but also some special phonetic changes in some dialects,such as the lateral frication aprroximant,and the phenomenon that fricative becomes labiodental consanart recently.Secondly,from the point of view of vowels,in addition to the combined and innovative phonetic changes of middle ancient Chinese rhymes such as the combination of Ge group and Hao group,we also point out the historical phonetic changes of medials including the transfer,disappearance and production of the inter-mediate sounds,and then the innovation of the nasalized rhymes and syllable endings.At the same time,we find out there is transformation of smooth syllables in eastern Min dialect.Finally,in the aspect of tone,in addition to the combination of tone category and the variation of tone value,there are special tone innovation changes in the relationship between syllable type and tone division.