Whether squamous esophageal cancer is early stage or not has corresponding judgment criteria, and one should go to hospital in time to improve relevant examination and clarify the stage of the disease. Squamous esophageal cancer refers to esophageal cancer with clear diagnosis and the pathological type is squamous cell carcinoma. The pathological types of esophageal cancer can be squamous cell carcinoma, adenocarcinoma, undifferentiated carcinoma, etc. Squamous cell carcinoma can account for 90%. The difference between early and intermediate-late squamous esophageal cancer is mainly that early esophageal cancer usually refers to the tumor being confined to the esophageal mucosa or submucosa, regardless of whether it is accompanied by lymph node metastasis and the extent of metastasis. Intermediate and late esophageal cancer means that the tumor growth has broken through the esophageal mucosa layer and invaded the muscle layer above it or farther. Late stage refers to the occurrence of distant metastasis or invasion of surrounding important organs such as trachea and arteries. It is recommended to go to the hospital for examination in time and take appropriate treatment under the guidance of doctors.