This patented product is different for each person in terms of electronic stimulation and feedback. A specific electronic signal is selected to stimulate the skin. The electronic signal generated after the human skin is subjected to a specific stimulus is based on the clinical physiological test of the effective signal that is obtained. Compare them one by one, derive a patent formula to convert real-time physiological values; and introduce the human body self-regulation mechanism (which is lacking in all currently available blood collection instruments). Through machine self-learning, it is completely close to the individual's physiological state. To put it simply; use patented technology to obtain a signal that has a relatively positive relationship with human blood glucose changes, derive a formula, and then approximate the accuracy by the machine learning process, so the error rate can be lower than the industry norm to ± 10%, or even lower to ± 3-5%