Abstract： Professor LU Zheng's clinical experience in treating insomnia by subtypes is introduced. Professor LU Zheng believes that insomnia can be divided into four subtypes due to different clinical manifestations： difficulty in falling asleep， drowsiness， excessive dreaming， and easy awakening. Each subtype should also be treated based on syndrome differentiation. The syndrome types of difficulty in falling asleep mainly includes deficiency of both the heart and spleen，non-interaction between the heart and the kidney， liver-fire harassing the heart， and phlegm and food obstructing the stomach， and the corresponding methods are supplementing and boosting the heart and spleen， restoring interaction between the heart and the kidney， clearing the liver and calming the heart， and promoting digestion and dissolving phlegm. The syndrome types of drowsiness mainly includes pathogenic dampness encumbering the spleen， center qi deficiency， and yang qi weakness， and the corresponding methods are drying dampness and fortifying the spleen， supplementing qi and fortifying the spleen， and warming yang and boosting qi. The syndrome types of excessive dreaming include liver-fire harassing the heart， heartgallbladder qi deficiency，heart-spleen blood deficiency，heart-lung qi deficiency，and kidney discordance to heart，and the corresponding methods are clearing liver heat and calming the mind，tonifying the heart and calming the gallbladder， supplementing and boosting the heart and spleen， supplementing and boosting the heart and lung，and nourishing the kidney and calming the heart. The syndrome types of easy awakening include heart-liver blood deficiency， and heart-gallbladder qi deficiency， with corresponding methods being enriching the liver and calming the heart and the mind， and supplementing the heart， calming the gallbladder and arresting convulsion. Professor LU Zheng is also adept at using couplet medicines such as Os Draconis-Ostreae Concha， Citri Grandis Exdarpium-Arisaematis Rhizoma， Ganoderma-Succinum，Sclerotium Poriae Pararadicis-Polygalae Radix，to achieve good results，such as subduing yang， tranquilizing the heart and calming the mind， or dissolving phlegm and calming the heart and mind， or boosting brain， suppressing fright and calm the mind， or dissolving phlegm， promoting urination and calming the mind.