That's a good question! One way to keep your kitten out of the Christmas tree is to provide an alternative play area, such as a scratching post or a cat tree. You can also use a spray bottle filled with water to discourage your kitten from climbing the tree. It's also important to make sure any ornaments or other decorations are secured tightly and not within the reach of your kitten. Lastly, consider creating a barrier around the base of the tree to prevent your kitten from sneaking in.