Headache and tinnitus may be caused by insufficient blood supply to the brain, or it may be caused by Meniere’s disease, intracranial tumor and other diseases. 1. Insufficient blood supply to the brain: it is a common cause of headache and tinnitus. In addition to the symptoms of headache and tinnitus, dizziness, blurring of vision, weakness of limbs and other symptoms may also occur. 2. Meniere’s disease: in addition to the symptoms of headache and tinnitus, vertigo, fluctuating hearing loss, ear stuffiness and other symptoms. 3. Intracranial tumor: it will lead to headache, and tinnitus and other symptoms may also occur when it presses the brainstem nerves. Besides, prolonged late night, irregular life, anemia, low blood pressure, etc. may also lead to headache and tinnitus. Therefore, when the symptoms of headache and tinnitus appear, you should go to the hospital in time, under the guidance of the physician to clarify the cause of the disease, and follow the doctor’s instructions for treatment.