Hui-shan Lin2014-10-272014-10-272001-06-??http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/23512A rule-based analysis is not very promising in accounting for tone sandhi in Mandarin-Min code-mixing. This paper provides a non-derivational analysis to this tone sandhi phenomenon under the Optimality Theory (Prince & Smolensky 1993). A set of constraints, which includes the EquiDom constraint, the ParseR constraint, the *TMin constraint, the OCP-L constraint, and the IO-Ident constraint, are proposed. With this constraints set, tone sandhi in Mandarin-Min code-mixing is accounted for naturally.Mandarin-Min code-mixingTone sandhiOptimality TheoryUniversal constraints