Cat climbing frame is a kind of pet supplies, the appearance is usually a small multi-storey building structure, the main function is to let the pet cat can have fun, sports, rest space, the basic structure of the cat climbing frame must be a multi-storey structure, which is to meet the cat like to stay at a high place, can see the nature of the surrounding environment. Usually the cat climbing frame is made of wood and covered with carpet, and the smell of twine can bring the cat back to nature. This is mainly to attract cats to sharpen their claws on it and prevent cats from damaging other household items. Some of the larger cat crawlers will have a small room design, so that the cat can hide in it, to meet its sense of security. Usually the cat climbing frame also has toys, such as hanging balls, to provide the cat with playful exercise.