Pulmonary CT arterial calcification is a descriptive term for an imaging test that usually refers to calcium deposits in the walls of the pulmonary arteries, which require prompt medical treatment once detected. If arterial calcification is found in lung CT examination, it is usually caused by calcium deposition. The wall of the blood vessel with calcium deposition will gradually harden, which will make the pulmonary artery less elastic and less functional, etc. Calcification of the pulmonary artery belongs to the degenerative lesion, and it will not affect the blood circulation and will not show obvious symptoms when the calcification has not yet caused the narrowing of the blood vessel. However, if calcification leads to narrowing of the lumen, symptoms such as shortness of breath and wheezing after exercise will occur. Once discovered, it is necessary to go to the hospital in time for an examination to clarify the cause of the disease, and to carry out treatment under the guidance of the doctor.