Double lung infection is an infectious inflammatory response caused by the invasion of various pathogens into the lungs and is not necessarily related to dust inhalation. Prolonged dust or dust inhalation may cause pneumoconiosis. Double lung infections are the result of invasion of the lungs by various pathogens, including bacterial infections, viral infections, fungal infections, and mycoplasma infections. Common pathogens include Streptococcus pneumoniae, Staphylococcus aureus, Mycobacterium tuberculosis, Mycoplasma pneumoniae, various viruses, fungi, and so on. Infection in both lungs suggests a relatively high degree of infection. Long-term dust or dust inhalation may lead to pneumoconiosis, which is an occupational disease mostly found in occupational groups that require long-term exposure to dust, such as mine workers, coal workers, glass factory workers, cement workers and so on. Various kinds of fine dust can cause diffuse interstitial lung lesions after entering the lungs, which seriously affects respiratory function. Patients with lung infections are advised to seek timely medical treatment.