Generally speaking, children begin to add complementary food after six months. Seven-month-old babies can start with rice noodles. You can add some egg yolks to the rice flour, but don't add too much. You can start with 1/4 egg yolks and then gradually increase the amount. Then you can add some fruits and vegetables appropriately, and finally transition to meat. Must gradually add complementary food, otherwise it may cause children's indigestion, thus affecting growth and development.