It is generally possible to collect blood from the fingertips after washing hands with warm water for blood glucose measurement. Finger blood glucose should be measured when the circulation of the whole body is better, i.e., it is relatively warm when the finger is pricked, when the blood circulation is relatively good, the blood flow reaching the end of the finger is relatively high, which is conducive to blood collection and measurement. Fingertip blood collection for blood glucose measurement requires natural outflow of blood, avoiding forceful squeezing to prevent tissue fluid extrusion to dilute the blood, thus affecting the accuracy of the test results. In addition, the choice of test strips should be reasonable, and the test strips and blood glucose meter must match. For patients who have blood collected from fingertips after washing hands with warm water to measure blood glucose, it is recommended to go to regular hospitals, consult with professional doctors, and cooperate with the doctors to complete the relevant examinations, so as to avoid blind treatment.