In the perspective of the theory of “circular movement of y

ang

qi

ascending and descending”， the author explores the four-season pathogenesis and treatment of insomnia based on the seasonal changes of the body's

yin

-

yang

balance. It is believed that the core pathogenesis of insomnia lies in the spleen and stomach deficiency and the internal buildup of dampness. The four-season pathogenesis of insomnia focuses can be categorized into four aspects： abnormal ascending of

yang

qi

in the spring， leading to the liver fire inflammation or the liver

qi

stagnation； Predominance of

yang

qi

in the upper side of the heart and gallbladder fire in the summer； Lung disorder and abnormal descent of

yang

qi

， resulting in

yang

-heat conversion into dryness or disharmony between nutrient

qi

and defensive

qi

； Abnormal hiding of

yang

qi

， manifesting as floating

yang

or deficiency in both

yin

and

yang

in the winter. It is advocated to dynamically grasp the pathogenesis of insomnia in accordance with the changes in time. A treatment framework called “restoring ascending and descending of y

ang

qi

” is proposed， with the core focus on resolving dampness and strengthening the spleen， while also addressing the liver and strengthen the spleen， clearing and descending the heart and gallbladder， purifing and descending the lung

qi

， and suppressing hyperactive the

yang

and invigorating the kidneys in different seasons. This enrichment of the traditional Chinese medicine time medicine research in insomnia treatment， based on the characteristics of seasonal rhythmic time， aims to better serve clinical practice and provide ideas for the clinical diagnosis and treatment of insomnia.