DKTC type cylinder trolley long tube respirator consists of trolley gas tube wheel disc, pressure reducer assembly, gas cylinder, breathing mask and other components. The high-pressure gas from the cylinder becomes a low-pressure gas for breathing after decompression by the pressure reducer, and the gas enters into the trachea wheel through the rotary joint, and the user connects with the trachea and the breathing mask through the belt joint which is fastened at the waist, constituting a respiratory system which is isolated from the external environment. When working with a cylinder trolley type long tube respirator, it is easy to work in confined spaces and at heights due to the low burden on the user.