Toothache leads to earache and scalp pain, it should be the development of acute pulpitis. Acute pulpitis is usually caused by the lack of timely treatment of dental caries, which leads to further inflammation and reaches the nerve of the tooth. Pulpitis pain is severe and radioactive, and in severe cases, it will radiate to one side of the head and face, resulting in earache and scalp pain on one side. Acute pulpitis pain is severe, mainly due to the pulp cavity is a closed cavity, pulpitis is caused by excessive pressure in the pulp cavity. The best treatment is to choose root canal treatment, the first step of root canal treatment is to open the pulp drainage, which can make the pressure in the pulp cavity of the tooth reduce rapidly and relieve the tooth pain, and then disinfect the root canal and change the medicine, and then fill the root canal after the inflammation disappears. Toothache and earache, scalp pain, should promptly go to the hospital stomatology department, active treatment, so as not to delay the condition.