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?

at 2 years she is definitely very underweight. i would suggest you start masking healthy foods in whatever she likes to eat. use almonds, cashews and such things to make a powder at home and add them to her milk or meals. you can also add dates to the milk while boiling it and give it to her. if she does not like to sit down and eat, try to distract her and feed her while she is playing. you can also give her smaller meals and also let her have healthy liquids such as soups, juices, milkshakes and such