To keep your cat away from the Christmas tree, it's important to create a safe and enticing environment for them elsewhere. Start by providing plenty of toys and scratching posts, as well as a cozy space where they can rest and relax. Additionally, make sure to keep the tree out of reach by placing it on a sturdy base or placing it in an area with limited access. You can also try using deterrent sprays or citrus scents to discourage your cat from approaching the tree. Finally, make sure to keep a close eye on your cat and provide lots of love and attention!