Calcium deficiency can be judged by the following tests: first, blood tests, blood ionization tests and thyroid function and vitamin D tests, which can determine whether there is a calcium deficiency and vitamin D. If there is hypocalcemia or vitamin D deficiency, early oral treatment with calcium supplements and oral vitamin D supplementation is required. Second, take X-ray film, take bone and joint X-ray film can see the performance of osteoporosis when calcium deficiency, bone density significantly reduced, this can be the initial judgment of the human body has the symptoms of calcium deficiency. Third, do bone density examination, generally use the ankle joint to carry out bone density examination, so as to be able to determine whether the calcium deficiency according to the bone density situation.