The fricative vowels in Suzhou Chinese are investigated in this study. The acoustic results show that the fricative vowel has more noise and a lower F2 than its pure vowel counterpart. The F1 and F2 relations with the vowel height and backness of common vowels are not appropriate for the fricative vowels. The lower F2 of fricative vowel is due to the vowel constriction located in a more anterior position than the pure close vowel.