Hypo-differentiated squamous lung cancer belongs to a type of squamous cell carcinoma of the lung. It generally refers to squamous cell carcinoma of the lung with a lower degree of differentiation of cancer cells. Squamous cell carcinoma of the lung is a subtype of non-small cell lung cancer, which can be further classified into highly differentiated, moderately differentiated, lowly differentiated and undifferentiated types according to the different different degrees of differentiation of the cancer cells. The lower the degree of differentiation, the more malignant the tumor is. Patients with poorly differentiated squamous lung cancer may cough up a small amount of white sputum, or yellow sputum when secondary infection occurs, and the sputum may contain blood or blood clots, and some patients may have symptoms such as chest tightness, shortness of breath, and dyspnea. Treatment is mainly surgical treatment, radiotherapy and chemotherapy. Diet can eat more food rich in high quality protein and vitamins, which is conducive to strengthening immunity. Quit smoking and drinking, maintain a good state of mind, keep a combination of work and rest, avoid overwork. It is recommended that patients go to regular hospitals in time to avoid delaying the condition.