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<p>We investigate the temporal and spatial seismicity patterns prior to eight <span class="inline-formula"><i>M</i></span> <span class="inline-formula">&gt;</span> 6 events nucleating in different regions of Taiwan through a region–time–length algorithm and an analysis of a self-organizing spinodal model. Our results show that the spatiotemporal seismicity variations during the preparation process of impending earthquakes display distinctive patterns corresponding to tectonic settings. Q-type events occur in southern Taiwan and experience a seismic quiescence stage prior to the mainshock. A seismicity decrease of 2.5 <span class="inline-formula">&lt;</span> <span class="inline-formula"><i>M</i></span> <span class="inline-formula">&lt;</span> 4.5 events occurs around the relatively high <span class="inline-formula"><i>b</i></span>-value southern Central Range, which contributes to the accumulation of tectonic stress for preparing for the occurrence of the Q-type event. On the other hand, A-type events occur in central Taiwan and experience a seismic activation stage prior to the mainshock, which nucleates on the edge of the seismic activation area. We should pay attention when accelerating seismicity of 3 <span class="inline-formula">&lt;</span> <span class="inline-formula"><i>M</i></span> <span class="inline-formula">&lt;</span> 5 events appears within the low <span class="inline-formula"><i>b</i></span>-value area, which could promote the nucleation process of the A-type event.</p>