For a normal person’s physical examination, if a blood test for liver function suggests that alkaline phosphatase is low, this situation can continue to be observed. After one month or three months, the patient should take blood to review the liver function again to see if the patient has low alkaline phosphatase. If the review is normal, the patient only needs to review it regularly and no special treatment is needed. However, if the patient’s liver function is low for more than three times, it is suggested that the alkaline phosphatase in liver function is low. Especially for children, this time also need to pay attention to whether the patient has chronic nephritis, as well as other diseases of the kidneys may be, because kidney disease can cause patients with low alkaline phosphatase. In addition, for pediatric patients, it is also necessary to consider whether there are abnormalities of the skeletal system, such as the development of the skeletal system and the degree of development. If the patient has low alkaline phosphatase, it is possible that the patient may have a neoplastic disease of the skeletal system or delayed skeletal development. In adults, there is also the possibility of renal insufficiency or renal system disease, as well as the possibility of thyroid system disease.