The fracture of the hyoid bone is seen on physical examination with swelling and pressure pain in the hyoid bone area, sometimes with palpable bone fracture sounds. x-ray cervical spine lateral radiographs show translucent fracture line shadows, interrupted cortical continuity of the hyoid bone and fracture fragment misalignment. The causes of this symptom are: 1, mostly due to various blunt force contusions in the anterior cervical region, such as boxing injuries, strangulation injuries, car accidents, etc. 2. It can also be due to violent muscle strain injuries. According to the literature, strong swallowing action and sudden neck hyperextension and twisting can cause fracture of the hyoid bone. The fracture due to violent muscle contraction is a fracture of the tip of the large horn of the hyoid bone. Physical examination reveals swelling and pressure pain in the hyoid region, and sometimes a fragmentary bone rubbing sound can be palpated. The clinical manifestation is pain in the larynx. There is a severe stinging sensation in the larynx at the front of the neck, especially when the tongue is extended. Difficulty in swallowing. There is painful swallowing and dysphagia due to affected tongue movement or fractured pieces of the hyoid bone piercing the pharyngeal cavity. Hoarseness and loss of voice. Hoarseness in mild cases and loss of voice in severe cases. Respiratory distress with fracture fragment piercing into the pharynx, blood flowing into the pharynx, hematoma of the tongue root, edema of the pharynx or backward tilting of the tongue root and laryngospasm may occur to varying degrees. The neck is swollen, there is pressure pain in the hyoid bone area, and fracture fragments and friction sounds can be palpated in the early stage. Lateral radiographs of the cervical spine show translucent fracture line shadows, interrupted cortical continuity of the hyoid bone and misalignment of the fracture fragments. It has been reported that 1/2 of the fracture lines of the hyoid bone are located at the junction between the greater horn of the hyoid bone and the body of the hyoid bone; the other 1/2 of the fracture lines are located at the greater horn of the hyoid bone. The tip of the greater horn of the hyoid bone is fractured when the fracture is caused by violent muscle contraction.