The paper explores the generation mechanism from a perspective of prosodic grammar. We first point out that there is a tendency in Chinese for polysyllabic words to become disyllabic and explain that thorough prosodic template: Chinese prosodic words (prosodic template) are disyllabic. Then we account for the generation of acronyms based on Stress theory: most polysyllabic words, when acronymizing, keep only those syllables that carry stresses.