Most infants don't need solid food before 6 months because they receive all the nutrients they need from breast milk or formula. However, your pediatrician may recommend you start sooner if your baby shows signs that she's ready, such as mimicking your mouth movements while watching you eat or grabbing your food. If she doesn't seem interested at 6 or 7 months, don't try to force-feed her. The most important goal is to encourage the development of a healthy attitude toward food.
Whenever you start your child on solids, begin with foods that are the least allergenic and the closest to breast milk and formula in taste and consistency, such as mashed bananas or rice cereal. Use your finger to put a little banana on your baby's lips, then let her suck your finger. Once she's introduced to the new taste, gradually increase the amount and watch her facial expressions. If the food goes in, accompanied by a smile, she's ready and willing. If it comes back out with a grimace or if she turns her head away, try again in a couple of weeks.
For breastfeeding babies, it's best to offer solids at the end of the day, when your milk supply is usually lowest. (Formula-fed babies can eat at any time.) And remember that feeding isn't just about giving nutrition. It's a perfect opportunity to interact and connect with your baby.