A few striated shadows in the lower lobes of both lungs is an old lesion after the healing of a lung infection. Streaks in the lungs are the result of previous infectious lesions (e.g. pneumonia, tuberculosis, lung abscess, etc.) gradually being replaced by fibrous tissue during the repair process, and they are old foci left behind by the natural healing of lung infections, which can be interpreted as a scar, and a few streaks without symptoms have no adverse effects on the human body, so there is no need for special treatment. If there is no cough, sputum and other uncomfortable symptoms, you can regularly review, usually strengthen the exercise, improve the body’s immunity, prevent colds and flu, if there is a cough, sputum and other symptoms, considering that there is still part of the inflammation, it is recommended to go to the respiratory department of the hospital, for appropriate treatment.