Drinking tea or plain water with high blood sugar is fine, but it is generally not recommended to drink strong tea or tea containing sugar. High blood sugar patients can drink water or tea, generally does not affect the health, and will not lead to rapid increase in blood sugar. However, it is important to pay attention to a few points when drinking tea, as far as possible, do not recommend adding sugar, do not recommend drinking strong tea, and do not recommend drinking tea at night, so as not to affect the quality of sleep. As for plain water, you can drink it at any stage, but the daily consumption should be appropriate so as not to increase the burden on the kidneys. At present, high blood sugar has been detected, and the amount of sugar content should be strictly limited in diet, such as chocolate, cheese, cake, etc. These foods may lead to a rapid increase in blood sugar, which is not conducive to the control of the condition. If blood glucose rises more rapidly during eating, and the condition is not easy to control, it is recommended to seek medical treatment in time.