Nasal polyps, nasal vestibular cysts, papillomas, etc. are common. 1. Nasal polyps: a bulge on the inner side of the nasal cavity may belong to nasal polyps, through the nasal endoscopy can be found in lychee meat-like superfluous organisms, accompanied by nasal congestion, runny nose and other symptoms. 2. Nasal vestibular cysts: cysts are formed in the nasal vestibule area, which may show a bulge on the inside of the nasal cavity. If the cyst is small, there is usually no conscious symptoms; if the cyst is large, it can cause a feeling of swelling in the nasal cavity and nasal congestion. 3. papilloma: a bump on the inside of the nasal cavity may belong to papilloma, which is a benign tumor in the nasal cavity and may be related to the infection of human papillomavirus, which can lead to a foreign body sensation in the nasal cavity. There are many reasons why there is a bulge on the inside of the nasal cavity, so go to the hospital in time to improve the examination and take standardized treatment according to the doctor’s prescription.