There are several reasons for the bruising and swelling of the eyes after the forehead injury: first, the forehead injury is accompanied by the fracture of the anterior cranial fossa, and the fracture of the anterior cranial fossa has a characteristic clinical manifestation called the panda’s eye sign, which belongs to the blood infiltration into the external surfaces of the eyes after the bottom of the anterior cranial fossa and the appearance of bruising and swelling on the external sides of the eyeballs, which belongs to the slow infiltration of the blood, and it is necessary to observe the injury closely. This is a slow infiltration of blood and must be observed closely. If there is cerebrospinal fluid leakage, bed rest is necessary. Secondly, the forehead contusion is not just a single blow, but it shows that the bottom layer of the skin is free, and the hematoma will gradually extend downward with the subcapsular tendon membrane, and the skin on the surface of the eyes is relatively loose, so these hematomas will accumulate on the surface of the eyes, resulting in ocular bruises. At present, the most important treatment is still to apply cold compresses and observe the changes of the condition as the main way.