The area between the big fishes belongs to the lung meridian, and it is the place where the Fishbone point is located, so pain may indicate lung-related diseases. It is located on the outer side of the hand, at the midpoint of the radial side of the first metacarpal bone, at the point where the heart of the hand meets the back of the hand, and the heart of the foot meets the back of the foot, and it is the Xingjie point of the lung meridian. According to the original text of the Yellow Emperor’s Classic of Internal Medicine, “Xing is the master of body heat”, the Xingyi point can treat lung diseases such as cough, asthma, coughing up blood, sore throat, loss of voice, fever, and other signs of body heat. Therefore, if there is pain in the big fishbone area of the palm of the hand, it may suggest that there are diseases in the lungs or body heat, and it may also be caused by poor local qi and blood circulation. If there are uncomfortable symptoms, you need to go to the regular hospital as soon as possible, do not blindly diagnosed in order to avoid delaying the condition.