Mild Marfan’s syndrome is characterized by thoracic deformities, reduced upper volume/lower volume ratio, long head, zygomatic hypoplasia, entropion of the eyeballs, reduction of the jaws, abnormally flat corneas, and mitral valve prolapse with or without mitral regurgitation. Marfan’s syndrome, or Marfan syndrome, is an autosomal dominant connective tissue disorder in which the patient’s intelligence is usually unaffected, and the skeletal changes are thoracic deformities (chicken chest or funnel chest), a reduced upper volume/lower volume ratio, a long head, zygomatic hypoplasia, ocular entropion, jaw reduction, and spider toes. There may also be manifestations of lens dislocation, flattened cornea, mitral valve prolapse with or without mitral regurgitation, aortic valve closure insufficiency, spontaneous pneumothorax, apical lung pustules, dermatoglyphic atrophy (traction scars), and dural bulging detected by CT or MRI. Combined with the patient’s chromosomal examination, clinical manifestations, medical history, family history and other aspects can be clear diagnosis of the disease, this disease is currently no targeted treatment program, the emergence of serious cardiovascular lesions of patients feasible surgical treatment. The diagnosis of Marfan’s syndrome should be made by specialized physicians, and patients are advised to consult with regular hospitals.