The purpose of this dissertation is to elaborate rule by law on Qi region Legalists. The thoughts are closely related reginal culture. The research questions are: (1) What were the culture characteristics on the Qi region? (2) How about Qi region Legalists explained about "Fa" thoughts on Guan-tzu? (3) Compare SanJin Legalists with Qi Legalists to present how special are Qi Legalists? This study are proposed three point to show the special form Legalists: 1. legal outranked monarchy 2. enforcing the law was tolerant 3. liege relationship is harmonious.