Fasting blood glucose 6.34mmol/L is on the high side for normal people, and is within the target range for diabetics, which is not high. 1. The normal value of fasting blood glucose for normal people is between 3.9 and 6.1mmol/L, so fasting blood glucose of 6.34mmol/L is high, and it is recommended to consult a professional physician for a clear diagnosis. 2. For patients who have been diagnosed with diabetes in the past, the general fasting blood glucose should be controlled between 4.4~7.0mmol/L, so the fasting blood glucose of 6.34mmol/L has reached the control target, and can continue the current treatment program. It is recommended that diabetic patients maintain a regular diet, eat less sweets and excessively oily foods, and engage in regular outdoor exercise to help control blood glucose. Once elevated blood glucose levels are detected, prompt medical attention is recommended.