My baby is two years and two months old. She doesn't eat food, I start making some different type for her but she doesn't eat food,and her weight is just 7kg ,what should I do to gain her weight?

Give her all home made food. Feed her on time. Do not stuff her full, rather give her small healthy meals. I am sharing a link with you that will tell you what to feed your child to make her gain weight. http://www.livestrong.com/article/71244-foods-toddlers-gain-weight/ http://www.wikihow.com/Increase-Weight-in-Children