Vitamin D deficiency will cause certain damage to the human body, which will make osteoporosis and bone softening. 25-hydroxy vitamin D deficiency is commonly solved by more sunlight, oral vitamin D preparations and injections of vitamin D injections, etc., as follows: 1. After taking vitamin D preparations orally, vitamin D is absorbed through gastric juice or intestine, which can be supplemented with vitamin D. At the same time, calcium needs to be supplemented; 3, injection of vitamin D injection: 25-hydroxy vitamin D is supplemented through injection.