How can a mother deal with her jealous kid when the new born baby comes?

The best way to deal with the jealous kid is to continue to meet the kids demand caringly.

Give him a lot of love and thing and say that she is your sister or brother

As a father ho had to deal with that situation what i did was paying more atention to my elder baby girl because she was 4 when we had the twin and now they all grown whe when i kiss one i kiss the other two when i buy something for one i make sure to buy the same for the other two ...ext, i make suretomake them love each other and respect each other and to understand that the most important person in them life is them brother and sisters

By give them fair love and And same care 

Allow and teach the kid how to enjoy with his/her sibling through granting oppurtunities for the kid to play with the baby and other styles can be executed according to the kids personality.

Sharing with her kid caring of her new baby, love them both, and always be fair with them 

Thanks for invitation

With love and affection and also making them ok with each other.