The main forearm arteries are the radial artery, ulnar artery and common interosseous artery, as well as the superficial palmar arch and deep palmar arch that are subdivided into the hand. Injury to the forearm artery is mainly manifested as symptoms of partial obstruction of blood supply to the hand, including weakness and loss of pulsation of the ulnar or radial artery, cold sensation in the fingers, skin irritation and numbness, etc. How to prevent weakening and loss of ulnar or radial artery pulsation: 1, the fracture and blood vessels should be treated simultaneously: when dealing with vascular injuries, depending on the urgency of the injury, the fracture end should be repositioned and internally fixed while repairing the blood vessels (or before and after), as appropriate, and the vascular bed should be repaired. 2, pay attention to the muscle interval syndrome: extrusion-based injury mechanism, forearm soft tissue is more involved at the same time, so easy to appear muscle interval syndrome, thus aggravating the injury, especially the flexor muscle interval incidence is higher. Once this situation occurs, the muscle septum should be fully incised and decompressed as soon as possible, otherwise the hand function will be lost.