Cardia cancer can metastasize to other parts of the body to form metastases if not treated in time, such as common metastatic lung cancer and metastatic brain cancer. On the one hand, it can lead to the emergence of malignant symptoms in the body, which can lead to severe malnutrition and disorder of water-electrolyte-acid-base balance, and then lead to death if not treated in time. On the other hand, it can lead to the failure of multiple organs of the body, the most important of which are heart, kidney and liver complications or abnormal function failure. Again, it can lead to secondary infections caused by low immunity, such as fungal infections leading to infectious shock or aggravation leading to death from systemic failure. Therefore, it is recommended to deal with treatment early, generally early detection, early treatment, such as through surgery, radiotherapy or through Chinese medicine conditioning can be very good control, active review and prevention of related complications can live a good life, so it is recommended early detection, early treatment.