6mm mixed ground glass nodules are not serious if they are benign and more serious if they are malignant. Generally, lung nodules can be categorized as solid, partially solid, and ground-glass nodules, with the majority of lung nodules being benign. Partial solid nodules and ground glass nodules have a higher likelihood of malignancy, especially mixed nodules. In the case of 6-mm mixed ground-glass nodules, the possibility of malignant lesions exists despite the small diameter of the nodule. If the solid component is less than half of the nodule, it is likely to be benign and can be followed up with regular examinations. If the solid portion is more than half of the nodule, or if the solid portion has a tendency to grow, the malignancy is likely to be high, and the nodule can be treated with surgery. When 6mm mixed ground glass nodules are found, it is recommended that patients go to regular hospitals in time and listen to the advice of professional doctors.