Idiopathic interstitial pulmonary fibrosis is a diffuse inflammatory disease of the lower airways of unknown origin. Inflammation invades the alveolar wall and adjacent alveolar cavities, resulting in thickening of the alveolar septa and pulmonary fibrosis. Alveolar epithelial cells and capillary endothelial cells, their to small airways and small vessels may also be involved. Diagnosis: 1. Progressive dyspnea, cough and sputum, wet rales or twanging sounds in the lungs. 2, High-resolution CT examination: reticular shadows, foveal changes, patchy shadows, etc. are seen. 3, No causative cause was found. 4.Lung function examination: restrictive ventilation dysfunction, decreased diffusion function. 5.Lung tissue biopsy provides pathological basis. Treatment: Treatment of pulmonary interstitial fibrosis is also a project like the treatment of other difficult diseases. The goal of treatment: to obtain the reversible part and time, control the progression of the disease, improve the symptoms and improve the quality of survival. It is worth noting that when interstitial fibrosis is diagnosed, people doubt its reversibility and often abandon treatment efforts. In fact, most of the early stages are coexisting with alveolitis and partial fibrosis, and their alveolitis is completely reversible. The repair process of alveoli attacked by inflammation is the process of resorption and fibrosis, and its restoration to normal lung tissue or fibrosis depends on whether the necrotic tissue fragments can be completely absorbed. If it cannot, it will be replaced by fibrotic tissue. Therefore, when damage occurs in the lung it should be treated with standardized treatment as early as possible to avoid more irreversible fibrotic tissues that can cause damage to lung function. Life precautions: 1, to ensure that there is enough rest, but also pay attention to keep warm, to avoid cold, to prevent various infections. 2, the room should be quiet, keep clean and hygienic, the air should be fresh, moist, circulation, avoid smoke, perfume, air fresheners and other stimulating factors with strong odor, but also to avoid inhaling too cold, too dry, too wet air. 3, the diet must be diverse, reasonable, nutritious, proportionate, and suitable for digestion and absorption. 4, mentally should maintain a happy and optimistic mood, to prevent mental stimulation and excessive mental tension. 5. Stay away from exogenous allergens, such as flowers and plants, bedding and pillows filled with allergy-prone items such as feathers or old cotton wool, birds and animals (pets).