The sinuses are small air-containing cavities near the human nasal cavity, which play the role of daily heating and humidification of inhaled air, and can support the shape of the face and reduce the weight of the head, which is a very large role in the human body, but the “presence” of the organ is not as good as the nose itself. The human body has a total of four pairs of eight sinuses, namely the maxillary sinus, septal sinus, frontal sinus and pterygoid sinus. Their mucous membranes are connected to the nasal mucosa, so inflammation in the nasal cavity may affect the sinuses and cause sinusitis. Sinusitis refers to an inflammatory reaction in any sinus or multiple sinuses. The sinuses in the human body Sinusitis cases can be divided into acute and chronic according to the onset cycle. Acute sinusitis usually develops in less than 12 weeks, while chronic sinusitis can last longer than 12 weeks. Acute sinusitis occurs mostly as a result of upper respiratory tract infections, which are influenced by the mucous membranes connected as previously described. Chronic sinusitis, on the other hand, has more pathogenic causes, one of which is the transformation through acute sinusitis. Improper treatment of acute sinusitis, failure to treat it thoroughly and resulting in recurrence may transform it into a chronic condition. In addition, obstructive causes such as nasal polyps and nasal tumors can impede gas exchange between the nasal cavity and sinuses, which can also lead to chronic sinusitis. In fact, obstructive etiology is the primary cause of chronic sinusitis. Dental disease, trauma, foreign bodies, virulent pathogenic bacteria, and systemic factors can also lead to the onset of chronic sinusitis. Any factors that lower the body’s resistance combined with damage and infection-related factors near the nasal cavity can lead to the onset of sinusitis. When sinusitis develops, it is common for patients to experience nasal congestion, thick runny nose and decreased sense of smell, accompanied by headache or localized pain. Whether acute or chronic, sinusitis can cause general discomfort, mental discomfort, and insomnia. If several of these symptoms occur together, the possibility of sinusitis should be considered. Acute sinusitis may lead to lower respiratory tract infections and, in severe cases, orbital and intracranial complications, such as intraorbital abscess, orbital wall osteitis, epidural abscess, and subdural abscess. Chronic sinusitis can also lead to orbital and intracranial complications, and can cause infection of the lungs. The main causative factor of acute sinusitis is bacteria, so antibiotics are often used as the main treatment and surgery is not considered in principle, but it is considered when appropriate if there are some cranial and orbital complications. Chronic sinusitis has a complex etiology, and treatment can be considered using antibiotics, nasal hormones, mucus-thinning drugs, saline rinses and various Chinese herbal therapies, etc. If conservative treatment is ineffective and the patient continues to have clinical symptoms, surgery can be considered. General sinusitis can be cured after a period of time, and only in a relatively small number of cases the disease is difficult to cure and recurring. To prevent sinusitis, one should pay attention to enhancing exercise and improving one’s immunity. In addition, minimize the damage to the nasal mucosa, such as do not blow your nose, do not dig your nostrils, do not pluck nasal hair, etc.. You should also pay attention to try not to choke when swimming, avoid all kinds of liquid directly into the nasal cavity, etc.