The fundamental frequency F0 patterns of standard Chinese were examined at both macro (passage) level and micro (period) level in different speech modes using a Laryngograph. The results show that: 1. The more speech effort speaker makes the higher mean F0, mid F0, and modal F0 in connected speech, at the same time the pitch range is expanded; 2. The value of mean F0, mid F0, and modal F0 is different in different speech styles (isolated syllables, isolated sentences, and connected speech); 3. The speech rate has apparent influence on glottal waves but no significant influence on the F0 distribution function; 4. The closed phase is roughly inverse of F0 in isolated syllables with tones.