I. Diagnosis of vascular disease Superficially located vascular disease can be diagnosed through clinical examination. Deeply located lesions often need to be diagnosed by puncture, ultrasound, magnetic resonance, CT, three-dimensional CT angiography, fluoroscopic digital subtraction (DSA) and other auxiliary examinations. Imaging examination is of great importance for the diagnosis and differential diagnosis of vascular diseases. Treatment of vascular diseases 1.Hemangioma There are many treatment methods for hemangioma, such as oral propranolol, oral or local injection of hormone, interferon injection, sclerotherapy, imiquimod application, isotope dressing or injection, laser treatment, herbal dressing, surgical excision, etc. Since most infants and children with hemangiomas can regress naturally, the basic treatment concept is to control the rapid growth of the lesion at an early stage, observe it for a long time and wait for its natural regression, and if necessary, remove it surgically and restore its shape. After admission to the hospital, the patient needs to be evaluated by an experienced specialist, and then a scientific and reasonable personalized treatment plan is formulated. 2.Vascular malformation The treatment methods of vascular malformation include sclerotherapy, laser treatment, surgical resection, interventional embolization, radiofrequency ablation, microwave thermal coagulation, electrochemical treatment, etc. Generally speaking, laser treatment or laser photodynamic therapy is preferred for microvenous malformations, and surgical excision can be performed for small or significantly hyperplastic lesions; comprehensive treatment with sclerotherapy injection is chosen for venous malformations, interventional embolization + surgery is preferred for arteriovenous malformations, sclerotherapy injection is preferred for large cystic lymphatic vascular malformations, and treatment mode of sclerotherapy injection + surgical excision is mostly chosen for microcystic lymphatic vascular malformations. The development of treatment plans for large, refractory vascular malformations is very complex and usually requires a combination of multiple treatment techniques.