用高灵敏、高时空分辨的软Ｘ射线诊断系统，诊断ＨＬ－１Ｍ装置中等离子体的锯齿振荡。对观测到的四种主要锯齿作了介绍，对出现最多的有模经典锯齿和有模非经典锯齿作了详细描述和分析。结果表明，后者（主要在低ｑａ放电中出现）具有比前者低的中心ｑ（０）值，在物理机制上与前者不同，属湍流模型范畴。 Diagnose the plasma sawtooth oscillation in an HL-1M device with a highly sensitive, high-resolution, time-space-resolved soft X-ray diagnostic system. The four main sawtooths are introduced, and the most typical classical sawtooth and modeled non-classical sawtooth are described and analyzed in detail. The results show that the latter (mainly appeared in low qa discharge) has lower central q (0) value than the former, which is different from the former in physical mechanism and belongs to the category of turbulence model.