In resuscitated patients undergoing tracheotomy to establish an artificial airway, the tracheal tube usually used is a metal material consisting of an inner tube and an outer tube. In patients with respiratory failure who require artificially assisted breathing, disposable plastic tracheal tubes are commonly used. In recent years, we have compared metal tracheal tubes with plastic tracheal tubes: plastic tracheal tubes compared with metal trident tracheal tubes with capsules: plastic tracheal tubes have integrated capsules, no inner tubes, and the capsules are firmly and tightly combined with the tube body. The trigeminal tracheal tube is another set of air sacs, easy to slide and easy to damage air leakage. The cost of metal tracheal tube is 50% lower than plastic tracheal tube, and the inner wall of metal tube can be taken out at any time for cleaning and replacement, so it is not easy to block. The plastic tracheal tube has no inner sleeve and cannot be removed for cleaning and disinfection, so the secretions inside the tube are easily deposited on the tube wall and even crusted, causing the lumen to become smaller or blocked. Therefore, in order to keep the lumen moist and clean, appropriate antibiotics and drugs for diluting secretions, such as chymotrypsin and gentamicin, can be dripped into the catheter, and to strengthen the suction. Once the lumen is found to be blocked, the catheter should be replaced immediately if the wetting and suction cannot be solved. Plastic trachea catheter balloon input small tube interface is good, with a syringe to inject air, automatically closed, will not leak, connected to an artificial ventilator can give oxygen assisted breathing, in addition, in the beginning of the balloon input small tube with a small air bag, can always observe the whole car of the degree of inflation at any time to adjust. The metal cannula does not have this small capsule, only in the detection of gas injection after the pressure of the airbag. Plastic tracheal tube than metal tracheal sleeve hardness is low, there is a certain elasticity, orifice plastic tracheal tube than metal tracheal sleeve hardness is low, there is a certain elasticity, orifice blunt and smooth, for long-term with tube is not easy to compress the end of the tube surrounding tissues, such as trachea, esophagus, subclavian artery, etc., can reduce the trachea – esophageal fistula, aortic rupture bleeding, etc. The occurrence of serious comorbidities. Plastic tracheal tubes, like disposable syringes, are sterilized and sealed, and can be used when needed, with a validity of 3a, while metal tracheal tubes need to be sterilized before use. The curvature of the two tubes is different. The metal tracheal cannula is curved, while the plastic tracheal tube is at a 90 degree angle. Therefore, post-surgical care should draw attention to the fact that it is easier to enter the metal cannula with a suction tube, while the plastic catheter has a large curvature and a certain resistance, and a softer suction tube should be chosen to enter the tube and suck out the deep secretions. In short, any tracheal tube has its own advantages and disadvantages. If tracheotomy is performed simply to keep the respiratory tract open and aspirate sputum, we advocate the use of metal tracheal tube, which is cheap and can be cleaned at any time, not easily blocked and good for aspiration. If artificially assisted respiration is performed to save patients in respiratory failure, plastic tracheal tubes should be used better. However, no matter what kind of cannula should always pay attention to the prevention of infection, pay attention to the hardness of the air sac, and when not using the assisted ventilator the gas in the air sac should be withdrawn to reduce the pressure on the tracheal wall.