根据性早熟的发病机制和病因，可将之分为中枢性性早熟和外周性性早熟：1.中枢性性早熟（centralprecociouspuberty，CPP）亦称完全性或真性性早熟，是指由于下丘脑-垂体-性腺轴功能提前激活，导致性腺发育及功能成熟，与正常青春发育成熟机制完全一致，并可具有一定的生育能力。
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