There are many kinds of trace elements in the human body, including potassium ions, sodium ions, phosphorus ions and so on. These trace elements content within the normal range, can ensure that the human blood inside and outside the level of balance. Even in the case of drinking too much water, it can maintain the basic endocrine balance of the human body and try to avoid diseases in the human body. The concentration of potassium ions is the most important to the human body, with a normal concentration range of 3.5-5.5 mmol/L. If the concentration of potassium ions is too high, it may lead to hyperkalemia and cardiac arrhythmias or even cardiovascular diseases. If the level is too low, it can lead to muscle weakness and even affect the body’s normal breathing and eating. Therefore, the measurement of trace elements can effectively determine the health of the human body, and regular blood sampling at the hospital to measure trace elements is beneficial to ensure the health of the human body.