Generally speaking, nine-month-old babies can eat banana eggs. If you eat together, it is best to eat in small quantities. However, for the sake of baby's health, it is better to give bananas and eggs to the baby separately, and eating them separately will not affect the baby's normal digestion and absorption.
In addition, bananas belong to fruits, so babies who are too young should be careful not to cut too large pieces and eat too much at a time. Eggs are easy to make babies allergic, so babies with underdeveloped intestinal immune system should not eat eggs too early.