Whether or not hospitalization is required for casting after a fracture should be determined by the location and type of fracture. After fracture with or without vascular and nerve collateral damage, such as calf fracture, mid-calf fracture, transverse fracture and more stable fracture, after casting with good alignment and alignment, can be kept in emergency or outpatient observation, no obvious swelling, vascular and nerve collateral damage does not need hospitalization. If there are vascular and nerve injuries, limb activity dysfunction, sensory numbness, and poor peripheral blood flow need to be hospitalized for observation and treatment, and in serious cases, vascular and nerve repair surgery.