Abstract 本文选取江淮官话通泰片的13个方言点的声调系统,对其进行声学和听感描写,并对其调型进行类型学定位.通泰方言原来应以七声系统为主,但现在大多已减为六声系统了,少数还进一步衰减为五声、甚至四声系统.从类值对应来看,六声系统较为一致,阴平都是中降调,阳平是高调,阴去大多为平调,上声是纯低调.阴阳入都是短调,一般阳高而阴低.而七声五声系统的类值对应并不一致.不过,从调型模式来看,通泰方言和其他方言一样,长调以常四、常三为主.即使是五长调系统,仍大多是‘常四加一’模式. This paper selects 13 accent points in the Tong- Tai section of Jiang Huai Manderin,depicting their phonetic and hearing features and locates their tone type. Tong- Tai accent was mainly a seven- tone system,but now it has been reduced to six,or even further declined to five or four tones system. Observed from type value correspondence,six- tone system is more consistent,while the seven and five- tone systems are not consistent.However,observed from tone type mode,similar to other accents,the long tones in Tong- Tai accent are mainly constant 4 or constant 3. Even the 5 long- tone system is usually a "constant 4 plus one"mode.