Whether or not to remove a lung nodule 8mm needs to depend on the specific situation, if it is a benign nodule can be treated conservatively, if it is a malignant nodule it is recommended to remove it. The causes of lung nodules may include lung inflammation, tuberculosis and lung tumors. It is necessary to go to the hospital in time and choose the symptomatic treatment under the guidance of the doctor. If it is caused by lung inflammation, timely anti-infection treatment is needed to make the nodule absorbed and cured; if it is caused by tuberculosis, systematic and standardized anti-tuberculosis treatment will make the disease cured; if it is caused by benign tumors, and the diameter is not more than 1cm, it can be regularly reviewed and conservative treatment. If the diameter exceeds 1cm, surgical resection is recommended. If it is a malignant lung nodule, it needs to be surgically removed in time and combined with other treatments such as radiotherapy. It is recommended to consult a professional doctor in time, according to the specific diagnosis and targeted treatment.