To keep cats out of your Christmas tree, it's important to take a few preventive measures. First, make sure to place the tree in a safe and secure spot where the cats can't easily access it. This could be in a room with a closed door, or even on a high shelf or counter. Next, consider using a tree skirt that's made of a material that's not appealing to cats, such as plastic, or placing a barrier around the base of the tree, like a mesh fence. Finally, try using some of the home remedies for keeping cats away, like placing lemon peels or orange peels near the tree