Due to the large number of foods in nature, it is difficult to select the food that contains the most vitamin D. However, foods that are high in vitamin D include, sockeye salmon liver, cheese, egg yolks, sardines, dried mushrooms, and so on. Vitamin D is an important vitamin for the human body, which can promote the absorption of calcium and phosphorus in the intestines, increase bone density, and prevent and treat vitamin D deficiency rickets. Adequate supplementation of vitamin D is of great significance to human health. The highest vitamin D in common food is red trout liver, per 100 grams of rainbow trout liver containing vitamin D623IU, followed by cheese, per 100 grams of cheese containing vitamin D296IU, 100 grams of egg yolks containing vitamin D217IU, 100 grams of sardines containing vitamin D193IU, 100 grams of dried shiitake mushrooms containing vitamin D154IU, 100 grams of lard containing vitamin D92IU. D92IU. Supplemental vitamin D capsules or drops are contraindicated in patients with hypercalcemia, hypercalciuria, and renal rickets. If oral supplementation with vitamin D drops or capsules is required, please consult your clinician.