The normal value of alkaline phosphatase is 40 to 150 units per liter, so this value is normal. Increase in alkaline phosphatase is common in bone disease, liver and gallbladder disease. 1. Skeletal diseases: Alkaline phosphatase comes from the liver and bones, physiological conditions such as children’s growth and development, after two months of pregnancy, can lead to an increase in alkaline phosphatase levels. When suffering from bone diseases such as rickets, cartilage disease, malignant tumors, bone metastasis, etc., it can lead to bone destruction and increase the value of alkaline phosphatase. 2. Hepatobiliary diseases: patients with extrahepatic bile duct obstruction, cirrhosis, liver malignant tumors, etc., can also lead to increased alkaline phosphatase levels. If the alkaline phosphatase level is found to be elevated, it is recommended that the patient should consult a regular hospital and complete the relevant laboratory tests, so as to exclude liver and bone lesions.