9-10 months old baby milk is still the main source of nutrition, breastfeeding plus complementary food, or formula feeding plus complementary food, milk volume 700-900mL per day, complementary food species can be increased than before, such as rice porridge, noodles, cookies, broccoli, pumpkin puree, carrot puree, tomatoes, various fruits, fish, pork, chicken, egg yolk, etc. 4 times a day milk, 2-3 meals of complementary food, daily wet urine 6-8 diapers, the amount of urine is quite a lot indicating that the amount of intake is enough. Vitamin D 400U per day, breast milk is not necessary to calculate the amount, as long as more breast milk can be fed with complementary food; if breast milk is not enough, you can add some formula, that is, mixed feeding with complementary food can be.