There is generally no distributional constraint for the apical vowels in Eastern Zhenjiang Mandarin, and the apical vowels contrast with the high front vowels when preceded by an initial consonant [p ph m t th n l ʨ ʨh ɕ] or occurring in an onset-less syllable. This paper analyzes acoustic characteristics and lingual articulation in the production of the apical vowels [ɿ ɥ] in Eastern Zhenjiang Mandarin. The results show that although accompanied by frication noise, the apical vowels [ɿ ɥ] have their own spectral properties that are distinctive to the high front vowel [i y]. The ultrasound data reveal that both the anterior and posterior parts of the tongue are involved in the production of [ɿ ɥ].