The thickening of the left wall of the oropharynx needs to be judged in conjunction with clinical symptoms and relevant examinations, and cannot cannot be directly pointed to represent cancer. Although the thickening of the left wall of the oropharynx may be a tumor, it does not represent cancer; the symptoms of nasopharyngeal cancer mainly include retraction of snot and blood, and the thickening of the posterior wall of the roof of the nasopharynx is found through magnetic resonance imaging (MRI). Further examination is recommended, and a tissue biopsy for pathology can be extracted when necessary to make a clear diagnosis. However, it may also be due to the mucosal tissues of the pharynx after repeated stimulation by inflammation, causing local mucosal hyperplasia or congestion and swelling of the pharynx, such as common acute tonsillitis may cause thickening of the wall of the oropharynx. In conclusion, thickening of the left wall of the oropharynx does not imply cancer and requires further examination. However, no matter what the cause is, you should cooperate with your doctor for active treatment. It is recommended to drink more water, avoid spicy and stimulating food, and quit smoking and drinking.