摘要Limb injury is the common type of trauma in the battlefield,with high disability and mortality.Ultrasound is considered as the prior imaging examination by the features of convenience,easily operated,quick imaging,and so on.Microultrasound can be applied in the battlefronts,assisting the treatment of "golden 1 hour" after limb injury.Ultrasound can be used to determine the location and severity of limb blood vessels injuries,to identify muscle injury and osteofascial compartment syndrome.In addition,it can be applied to diagnose bone fracture,rupture of tendon and ligament,and foreigh bodies of limb.In recent years,nerve block anesthesia and analgesia can be performed under ultrasound guide.All the above is favorable of persistence in combat.As the emergence and clinical application of high-level microultrasound,it is with great value in the treatment of "golden 1 hour" after limb injury.