The purpose of this paper is to introduce the experience of Professor Fan Guanjie in the treatment of hyperthyroidism by using the “Fan’s eight development-regularity sequential method”. It is believed that the treatment of hyperthyroidism should identify the core pathogenesis from the key symptoms， and then treat the disease based on syndrome differentiation. The core pathogenesis are qi stagnation， effulgent fire， phlegm congelation， blood stasis， deficiency of both qi and yin， liver yin deficiency， kidney deficiency and spleen deficiency， which are treated by the methods of soothing the liver and regulating qi， clearing heat and purging fire， resolving phlegm and resolving dampness， activating blood and resolving stasis， replenishing qi and enriching yin， enriching liver yin， tonifying the kidney and securing the root ，and fortifying the spleen respectively. The prescriptions mainly include a series of Chinese medicines and are modified focused on the law of disease development， the sequence of treatment and the importance of the liver. And one proven case is presented.