Nasal lumps may be caused by nasal polyps, sebaceous cysts and nasal tumors. 1. Nasal polyps: benign hyperplastic lesions in the mucosal tissues of the nasal cavity or sinuses can be manifested as lumps in the nasal cavity, with symptoms such as nasal congestion, runny nose and sneezing. 2. Sebaceous cysts: If the sebaceous secretions in the nasal cavity cannot be discharged normally, cysts can be formed under the skin, which can be manifested as lumps in the nasal cavity. 3. Nasal tumors: benign tumors such as hemangioma, smooth muscle tumor and malignant tumors such as nasopharyngeal carcinoma can be manifested as lumps in nasal cavity. It is suggested that those who have lumps in nasal cavity should go to the hospital in time, clarify the cause of the disease, and carry out standardized treatment under the guidance of doctors.