平南上渡白话有九个声调:阴平、阳平、阴上、阳上、阴去、阳去、上阴入、下阴入、阳入。一直以来人们对平南白话声调的研究并不多,即使有也只是在语音描写的篇章中涉及而并没有做专题的研究。从实验语音学的角度对平南上渡白话单字的声调进行数据分析,更直观地呈现其声调系统。 Pingnan on the cross vernacular has nine tones: yinping, yangping, overcast, yang, yin go, go yang, on the yin into yin into yin. There have been few researches on the tone of Pingnan vernacular, even if there is only a special topic involved in the speech description. From the perspective of experimental phonetics, the tone of flat vernacular vernacular in Pingnan is analyzed and the tone system is presented more intuitively.