Abstract：This paper introduces the clinical experience of Director CHEN Lei in treating insomnia with meridian scraping therapy. Based on the theory of yin-yang interaction，Director CHEN Lei believes that insomnia is related to the failure of yin and yang qi to interact. The pathogenesis of insomnia can be summarized in three aspects：first，the failure of the monarch and minister fires to interact， resulting in disharmony between the heart and kidney； second， the malfunction of the spleen， disrupting the pivot function； third， Shaoyang disorder， leading to impaired pivot mechanism. Clinical treatment follows the principles of restoring interaction between the heart and the kidney，raising the clear and directing the turbid downward，and smoothing the pivot mechanism. Syndrome differentiation is applied to administer meridian scraping therapy，enabling the interaction of water and fire，the mutual promotion and friction of yin and yang qi， and thus allowing the spirit to reside peacefully in its house， leading to spontaneous recovery from insomnia.