Dizziness caused by saline nasal wash may be a normal physiological phenomenon, or it may be sinusitis, rhinogenic headache and other pathological causes. If it occurs continuously, it is recommended to go to the ENT department of the hospital to clarify the cause. 1. Physiological reasons: general saline concentration of 0.9% saline is the best effect, and the temperature should be close to the body temperature, to grasp the amount and speed of rinsing. When cleaning the nasal cavity, if the temperature of the saline is relatively low, or the rinsing speed is too fast, it is easy to stimulate the nose and cause dizziness. 2. Sinusitis: Sinusitis is divided into acute and chronic, including inflammation of the maxillary sinus, sieve sinus, frontal sinus, pterygoid sinus and other parts. Mucosal swelling and secretion accumulation, improper rinsing can lead to saline into the sinus cavity and the symptoms of dizziness. The general use of antibiotics, mucus drainage agents, nasal spray hormone treatment, if necessary, the feasibility of sinus puncture rinse, and even surgical treatment. 3. Nasal headache: refers to the dizziness caused by anatomical or pathological abnormalities of the nasal cavity and sinuses. Such as nasal septum deviation, nasal cysts, may be saline irritation of the lesion area, triggering dizziness. Active treatment of the original disease is generally required. When rinsing the nose with saline water, it is necessary to pay attention to the concentration and temperature of the saline water, and to grasp the rinsing volume and speed. If there is no relief of dizziness, it is recommended to go to the ear, nose and throat department of the hospital as soon as possible to avoid delaying the condition.