If the pulmonary fibrosis is localized pulmonary fibrosis, it has no significant effect on the patient’s life expectancy. If it is diffuse pulmonary fibrosis, it will affect the life expectancy, and generally the median survival time is 2-3 years, and the specific survival time is not the same for each person with different physical conditions. Localized pulmonary fibrosis generally does not affect the patient’s life expectancy, often caused by pneumonia, tuberculosis, caused by lung damage caused by localized fibrosis will not affect lung function, without special treatment, but localized fibrotic foci are prone to lung infections, such as fever, coughing and other symptoms, it is recommended that the patient to go to the hospital, under the direction of the doctor to take the appropriate antibiotics. If the patient develops diffuse pulmonary fibrosis, not only localized pulmonary fibrosis foci, there is the possibility of affecting the patient’s life expectancy. For example, idiopathic interstitial pulmonary fibrosis is one of the types of diffuse pulmonary fibrosis. The survival period of patients with idiopathic interstitial pulmonary fibrosis is significantly shorter than that of normal people, and they usually survive for a period of 2-3 years after the diagnosis of idiopathic interstitial pulmonary fibrosis is confirmed. If fibrous foci in the lungs are found it is recommended that they be observed or treated under the guidance of a medical professional.