Finger blood glucose taken from a pregnant woman with fasting 5.4mmol/L is not normal and is on the high side. Usually finger blood collection for blood glucose testing is called peripheral blood glucose test, pregnant women fasting state normal value <5.1mmol / L; therefore, pregnant women in the fasting state of the peripheral blood glucose taken 5.4mmol / L, belong to the abnormal blood glucose range, may be gestational diabetes mellitus, need to pay attention to, timely consultation and treatment. Gestational diabetes mellitus is mainly controlled by diet and exercise, and can be treated with insulin injection as prescribed by the doctor if necessary. If the pregnant woman's blood sugar is abnormal, it is recommended to consult a doctor in time, under the guidance of the doctor to clarify the cause of the disease, and carry out targeted treatment and therapy.