In the middle and late 1990s, the mobile phone case became popular with the opportunity of slimming. Its types are also diversified with the increase of mobile phone brands and functions, including leather, silicone, cloth, hard plastic, soft plastic and so on. With the development of 20 13 mobile phone case, it is no longer a simple practical commodity. With the popularity of mobile phones among young people, almost every young person who pursues fashion wants to have a unique mobile phone. Beautifying mobile phones has gradually become a way for them to show their individuality. In order to cater to this trend, manufacturers of mobile phone protective covers have introduced many products with better workmanship and more unique color patterns. This makes the types of mobile phone protective cases more diverse.