Drinking tea will not cause dizziness. If dizziness occurs after drinking tea, the following conditions need to be considered: 1. High concentration of tea, high concentration of tea contains caffeine, which will cause rapid heart rate and reduced cardiac output, resulting in dizziness due to insufficient blood supply to the brain. 2. Caffeine inside tea, which has a stimulating effect on the nerves of the brain, will cause dizziness and nausea due to central nervous excitation. 3. Hypoglycemia, drinking tea will dilute Blood, especially after drinking tea on an empty stomach, easy to cause blood sugar lowering and dizziness, accompanied by sweating, weakness, panic, the need to actively eat sugary foods. 4, allergic reactions, some people are allergic to tea, after drinking will appear pale, dizzy, blood pressure drop, etc., the need to actively go to the hospital for treatment, usually drink tea to avoid too high concentration, try not to drink tea before bedtime and on an empty stomach, so as not to cause discomfort.