Early symptoms of squamous cell carcinoma of the lung are not too obvious, only occasional cough, fever, chest tightness as well as pain. 1. Cough, which is considered as a typical symptom of squamous cell carcinoma of lung in early stage, but the cough is not very serious and the frequency is not high. 2. Fever, the cancer cells affect the immunity of the body, plus the tumor itself has tumor fever, so there will be fever, but the temperature is usually not too high. 3. Chest tightness, with the increasing size of the tumor and its extrusion and obstruction to the surrounding tissues and organs, patients will have chest tightness and swelling. 4. Pain, as the tumor infringes on the nerves of the lungs and squeezes the normal tissues, mild pain will occur from time to time, which will be aggravated gradually. If you suspect that you are suffering from squamous cell carcinoma of the lung, you should go to regular hospitals in time for CT of the lung, fiberoptic bronchoscopy and other examinations to clarify the condition.