Dizziness and dry mouth may be caused by physiological factors, diabetes, severe anemia and other diseases. 1. Physiological factors: If you are in a hot environment and do not replenish water in a timely manner, you may experience dry mouth and tongue, and dizziness can be caused by severe dehydration. This situation can be relieved by improving the environment and replenishing water in time. 2. Diabetes: caused by abnormal insulin secretion in the body, there will be dry mouth and thirst, drinking and urinating, body wasting and other symptoms, blood sugar continues to rise, easy to make the patient dizziness. You can use metformin tablets, acarbose tablets and other drugs under the guidance of the doctor. 3. Severe anemia: when anemia is severe, it can affect the heart and make the blood supply to the heart muscle insufficient, which will cause dizziness, dry mouth, limb weakness and other symptoms. It is necessary to follow the doctor’s instructions for appropriate iron supplements. Dizziness, dry mouth and tongue may also be caused by other diseases, it is recommended that patients go to the hospital in a timely manner to find out the cause of the symptoms of the treatment.