As a basic knowledge of science, how many lobes of lung does a person have? Are the left and right the same structure? I remember when I was studying anatomy in college, when I learned the lung anatomy class, our lecturer, Professor Chen Zhongxin from Tianjin Medical University, gave us an image of the number of lobes just like we eat, holding a bowl in the left hand and a pair of chopsticks in the right, the left lung is one hand plus a bowl, two lobes, and the right lung is one hand plus two chopsticks, that is, three lobes. I still remember this analogy clearly after nearly twenty years. Yes, our left lung is divided into two lobes, upper and lower, and the right lung is divided into three lobes, upper, middle and lower. And in addition to the difference in the number, the volume is also different, the right lung is short and wide, the left lung is long and narrow, the left lung because of the large blood vessels of the heart crowded, the volume of 45% of the total volume, the right lung accounts for 55%. Some people may ask, “I know there are five lobes of the lungs, so if lung cancer requires surgery to remove the lobes, is it equally difficult to remove the five lobes? Is there a question of which lobe is better or harder to remove? If there are no thoracic adhesions and the lobar fissures are well developed, it is recognized that the easiest lobectomy among all lobes is the left lower lobe, because there is very little anatomical variation in the left lower lung vessels and the anatomy of each structure is relatively constant.