The constant desire to sleep and special sleepiness after a cold is mainly due to the pathological state of ischemia and hypoxia in the brain. Due to the decrease of immunity of the body, invasion by viruses, bacteria, mycoplasma, chlamydia and other pathogens, the mucous membrane of the upper respiratory tract appears obvious inflammatory reaction of congestion, edema and exudation of inflammatory substances, especially for patients who have undergone serious pathological changes in the mucous membrane of the nasal cavity, acute rhinitis, sinusitis or who have chronic rhinitis or sinusitis themselves, and have acute attacks due to cold. At this time, the blood circulation in the mucous membrane of the upper respiratory tract is not smooth, which easily leads to ischemia and hypoxia, causing dizziness, headache, old desire to sleep and special sleepiness. The most common clinical cases are acute rhinitis and sinusitis and acute attacks of chronic rhinitis and sinusitis.