Subcutaneous hematoma of the head is a hematoma located between the surface of the scalp and the capitellar tendon membrane. Since the connective tissue of this layer is relatively dense, the extent of the hematoma is often relatively small, and cold compresses are applied within 24 h after the injury to reduce bleeding and the volume of the hematoma, and hot compresses and mild massage are applied after 24 h to promote the absorption of the hematoma. Since the nerves under the scalp are relatively dense, the pain of subscalp hematoma is often obvious, and some oral painkillers can be given for symptomatic treatment. Most subscalp hematomas are treated conservatively and are usually absorbed within a month. If it is not absorbed for a long time, such as more than 3 months, the hematoma will become harder and harder, and scalp incision hematoma removal can be performed.