Cystic fibrosis is a disease that is clinically characterized by multiple cystic lesions throughout the body, and most cystic fibrosis lesions are benign lesions. If the number of cystic fibrosis lesions is small and the volume is small, and they do not cause local swelling, pain and pressure symptoms at this time, patients are clinically advised to take the method of close observation, and surgical removal is not needed for the time being. If the cystic fibrotic lesions gradually increase in size during the process of close observation, accompanied by symptoms of compression of peripheral nerves and blood vessels or causing restriction of limb movement of patients. At this time, in order to avoid serious complications caused by cystic fibrosis, patients can consider surgical resection or ultrasound-guided injection of sclerosing agent into the cystic fibrosis lesion to induce the cystic fibrosis lesion to dissolve and absorb on its own.