my baby is 9 months from 5 month she is sucking her finger whole day ? what should i do

No  ...baby exploring his body part..let him Enjoy

no it does not mean they are hungry.. sometimes yes but not always .. its also a form of comforting for the child

<font color ="#3b5998"><b> @6373117517d2c800158d959f </b></font> baby find everything new to them..they want everything to put inside..so its not a hungry..if you want such distract them by giving some toys or by singing a song tats all u can do it..keep the babys hand clean..

no, the baby is exploring his body parts.soon, he will be putting his toes into his mouth as well