In general, to diagnose gestational diabetes, the first step is to control the diet and engage in appropriate exercise to observe the reduction in blood glucose levels. If through dietary and exercise control, fasting and pre-meal blood glucose levels are below 5.3 mmol/L, and post-meal blood glucose levels after two hours are less than 6.7 mmol/L, and nighttime blood glucose should be higher than 4.4 mmol/L. If one can reach these standards through diet control and exercise, then continue as currently managed. However, if blood glucose levels cannot reach this range through diet and exercise, it is recommended to use insulin treatment as soon as possible. This is because uncontrolled blood glucose levels during pregnancy can significantly impact both the expectant mother and the fetus. Thus, if diet and exercise cannot normalize blood glucose levels, early treatment with insulin is advised. (Please take medications under the guidance of a qualified physician and do not self-medicate.)