Squamous carcinoma is one of the special types of lung cancer, and the early symptoms are similar to those of most lung cancers. Some patients do not have any clinical manifestations, while some of them may have cough and sputum, and may have a relatively small amount of sputum with blood. Some patients may have cough, sputum, or blood in the sputum. In addition, they may have mild chest tightness, chest pain, and so on, and may have dyspnea occasionally. At this time, early examination should be done, such as X-ray, CT, or even MRI of both lungs, to detect possible early cancerous tumors. In addition, if necessary, the biopsy of the cancerous tumor can be taken by bronchial fiberoptic endoscopy for pathological examination, so that early diagnosis and early treatment can be carried out.