Enlarged submandibular lymph nodes are mainly associated with lymphadenitis, metastatic malignant tumors, acute pharyngitis and other factors, and are not directly related to the eyes. There is no scientific basis for the claim that enlarged submandibular lymph nodes are related to the eyes, so don’t believe it blindly. 1. Lymphadenitis: due to inflammatory stimulation, it can lead to submandibular lymph node enlargement. 2. Metastatic malignant tumor: for example, nasopharyngeal cancer, laryngeal cancer, when there is tumor metastasis, it can also lead to submandibular lymph node enlargement. 3. Acute pharyngitis: when stimulated by dust, smoke and harmful gases, it can induce inflammatory reaction of the body, which can also cause swelling of submandibular lymph nodes. If the submandibular lymph nodes are enlarged, patients should pay attention to the need to go to the hospital in a timely manner, and treatment and more communication with the doctor.