Blood test inorganic phosphorus high 1.66mmol / L belongs to hyperphosphatemia, cause hyperphosphatemia more causes, such as acute and chronic renal insufficiency, parathyroidism, etc., in the basis of the above diseases, hyperphosphatemia, it is more serious, and should be actively dealt with; if it is a transient inorganic phosphorus increase, such as eating too much phosphorus-containing food, it is not serious. High inorganic phosphorus, also known as hyperphosphatemia, can be diagnosed in adults with serum >1.61 mmol/L and in children with serum >1.94 mmol/L. Hyperphosphatemia can be caused by decreased renal phosphorus excretion, acute and chronic renal insufficiency, and parathyroidism. Hyperphosphatemia can cause elevated blood calcium, leading to extensive calcification and stone formation, with large calcified masses in joints, skin, bone marrow, teeth, blood vessels, muscles, and tendons. Severe hyperphosphatemia can be accompanied by hypocalcemia, ectopic foci of calcification, and can present with sensory abnormalities, twitching of the hands and feet, abdominal pain, nausea and vomiting, muscle twitching, seizures, and impaired consciousness. If you have hyperphosphatemia, you need to go to the hospital as soon as possible, and the doctor will formulate an individualized diagnosis and treatment plan according to the specific condition, so as not to delay the condition.