A small inflammation of the lower lobe of the left lung may heal on its own without treatment, but scientific treatment is more effective. 1. If a small inflammation of the lower lobe of the left lung is found during an imaging test such as lung X-ray, if the immune function is normal, there is a possibility of self-healing, and the immune system can be improved through rest and proper exercise, so that it can be gradually absorbed. 2. However, if the disease is treated on its own, there is a possibility that the inflammation of the lower lobe of the lung cannot be cured by itself or even aggravated gradually, and symptoms such as fever, cough, coughing up pus sputum, chest tightness, dyspnea and so on, and in severe cases, infectious shock may occur. Therefore, it is recommended to consult a specialist as early as possible to standardize the treatment and control the disease at an early stage, which can promote early recovery.