25 hydroxyVD3 is applied in the field of feed to promote the development of livestock bones, enhance immunity, optimize vitality, reduce the amount of inorganic phosphorus in feed, optimize feed formulation, and promote the gradual development of animal husbandry towards high-quality and green direction.

　　25 hydroxyVD3 is applied in the field of medicine and healthcare, and is suitable for patients with severe calcium deficiency, immune deficiency, and chronic renal failure, especially for patients who require long-term hemodialysis, rickets, and rickets with low blood phosphate and vitamin D resistance. It has significant therapeutic effects. Moreover, 25 hydroxyVD3 is different from traditional vitamin D in that it is more effectively absorbed by the human body, with an absorption rate 3-5 times that of traditional vitamin D3. In recent years, 25 hydroxyVD3 has also been used to treat psoriasis and other skin diseases. During the epidemic, research has also had some preventive and therapeutic effects on COVID-19.