本文采用实验语音学及统计学方法考察泉州闽南话的平调合并现象。对鲤 城、青阳两组闽南话母语者进行了发音和感知实验，并通过五度标记法和 DTW 算法判断平调发音的合并情况，基于感知辨认率和区分率观测平调感知的特 点。结果表明：产出方面，鲤城话的阴平和阳上两个平调正在发生合并，合并程度低于青阳话，且鲤城青年一代的平调格局表现出不稳定性。感知方面， 鲤城、青阳的平调感知皆呈现出了多元、复杂的格局，产出和感知间存在一 致性和不对称性，而平调的合并可能是由发音延至感知。

This article uses experimental phonetics and statistical methods to study the phenomenon of level tone merging in Quanzhou Minnan dialect. Pronunciation and perception experiments were conducted on two groups of native speakers of Minnan dialect in Li Cheng and Qing Yang, and the merging of level tone pronunciation was judged by the Five level tone mark and the DTW algorithm, and the characteristics of level tone perception were observed based on the perceptual recognition rate and the distinction rate. The results show that: in terms of production, the merging of the two level tones, Yinping and Yangshang, is occurring in Leicheng, with a lower degree of merging than in Qingyang, and the pattern of level tones in the young generation of Leicheng shows instability. In terms of perception, the perception of level tones in both Leicheng and Qingyang shows a diversified and complex pattern, with consistency and asymmetry between production and perception, and the merger of flat tones may be extended from pronunciation to perception.