Lung squamous carcinoma is mainly localized and rarely has distant metastasis, while lung adenocarcinoma is more likely to have distant metastasis, so in this respect, lung squamous carcinoma is better than lung adenocarcinoma. However, this is not absolute. Whether it is squamous lung cancer or adenocarcinoma, the survival of patients is mainly related to the clinical stage. If the cancer is detected at an early stage, it may be cured by surgical resection, regardless of the type of pathology. In addition to the clinical stage, it is also related to the degree of differentiation of the malignant tumor. Whether it is squamous or adenocarcinoma, if the cells are poorly differentiated, such as undifferentiated or hypodifferentiated, the malignancy level is higher and it is easy to spread and metastasize. If the genetic test shows that there is a mutation in lung adenocarcinoma, it can be treated with oral targeted drugs, and if the effect is good, it can achieve long-term survival with tumor. In contrast, squamous lung cancer is less likely to be suitable for targeted drugs, and the treatment effect is poorer.