Esophageal cancer, also known as esophageal cancer, is a malignant tumor that occurs in the epithelial tissue of the esophagus, accounting for 2% of all malignant tumors. Esophageal cancer is curable in the early and middle stages, but more difficult in the late stages; treatment methods include surgery including palliative surgery and radical surgery, chemotherapy (radical radiotherapy and palliative radiotherapy); for those who cannot tolerate surgery or are unwilling to undergo surgery, esophageal stent implantation to relieve dysphagia caused by the original disease, esophageal-tracheal (or bronchial) fistula caused by various reasons, and recalcitrant benign esophageal stricture are good indications for esophageal stent implantation. The stenting of esophagus is a good indication for the treatment of esophageal cancer. Stents for the treatment of esophageal cancer can be divided into: common stents, membrane stents and particle stents. All three types of stents are made of memory alloy esophageal mesh stents, which are used to support the treatment of benign and malignant strictures of the esophagus and cardia. Nickel-titanium alloy is used to make the stent because it has elastic memory function, soft support force, adjustable elasticity and good biophilic solubility. When cool water is used to cool it down, it can be made soft and can be easily taken out in low elasticity state. Film-added stent: It is a common stent attached with film to effectively lift the esophagotracheal fistula caused by radiotherapy in esophageal cancer patients. After the stent is propped open, the film-added part blocks the fistula opening, rapidly improving the adverse symptoms of choking and coughing when eating and allowing food to pass smoothly. Particle stent: It is a memory metal stent containing radioactive iodine 125 particles, which is a radioactive 125 iodine with tumor-killing effect placed in a metal titanium shell, sealed and made into small short rods only 0.2 cm thick and less than half a centimeter long. The doctor will put these special particles in the bag outside the specially designed esophageal stent and deliver them to the lesion together with the stent. The particles continuously radiate short-range gamma rays and x-rays in the tumor part, irradiating the tumor tissue at close range to kill the tumor cells to the maximum extent within 2CM respectively, which can rapidly kill the tumor cells and cut off the way of tumor cells spreading without harming the normal tissues, so as to achieve the treatment purpose. It can kill the tumor cells quickly and cut off the way of tumor cell spreading without harming normal tissues. Moreover, after the particle stent is placed, patients can save the cost of long-term radiotherapy and no longer need to suffer from the toxic side effects of radiotherapy that bring various unpleasant symptoms to the body. Esophageal stent implantation is safe, non-operative, non-invasive, painless, low cost and effective, which can quickly solve the patient’s dietary problems, rapidly eliminate symptoms, restore physical quality, effectively improve the quality of life of esophageal and cardia tumor patients and prolong life.