This paper analyzes the disyllabic tone sandhi of Huangtuling in Youxian dialect from the perspective of autosegmental phonology. Based on the stress of the second syllable, the disyllabic phrases of Huangtuling dialect can be classified into full-tone syllables and “full tone + neutral tone” sequence. The values of neutral tones are mainly obtained via spreading and default tone insertion rule. In the case of the sequence of two full tones, tone sandhi of the first syllable is triggered by the delinking of floating tone and the deletion of contour node feature (h); whereas, the register in the second syllable is adjusted by stressed-syllable assimilation. Results manifest that the underlying cause of the complex tone sandhi in Huangtuling dialect is the strong-weak metrical pattern, which is governed by morphological structures of Youxian dialect, furnishing further evidences for the process of morphology-phonology interaction.