Tonsil cancer can be seen as obvious enlargement of tonsils, surface ulceration, hard texture, and so on. Tonsil cancer is squamous cell carcinoma, lymphoepithelial carcinoma, undifferentiated carcinoma and adenocarcinoma among malignant tumors of tonsil. Examination of tonsil cancer reveals that tonsils are obviously enlarged, with non-smooth or nodular surface, accompanied by ulceration and hard texture. The tonsils are adherent to the surrounding tissues and inactive. Meanwhile, tonsil cancer can touch the enlarged lymph node under the same side of the jaw, which is hard, inactive and without pressure pain. Tonsillar cancer usually presents with symptoms such as discomfort in the throat, foreign body sensation and obvious sore throat when swallowing on one side. If there is any discomfort, it is recommended to consult doctor for clear diagnosis in time and not to judge by oneself.