Small cell lung cancer is clinically cured after 7 years, but there is still a possibility of recurrence, so you should maintain a good lifestyle and have regular rechecks. Usually the prognosis of small cell lung cancer is poor, but for more limited small cell lung cancer, after treatment, the symptoms can be better relieved. In the case of small cell lung cancer that has been 7 years old, it is considered that the symptoms have been relieved after treatment, which meets the standard of clinical cure. However, small cell lung cancer is more likely to recur after treatment and patients still need to be vigilant. It is recommended to stay away from tobacco in daily life, pay attention to light diet, ensure nutritional intake, standardize work and rest, avoid staying up late, and take precautions against cold and warmth. Meanwhile, patients should undergo regular checkups.