On the one hand, the same letter, due to different writing methods, can form a completely different appearance image; On the other hand, different letters, due to different writing styles, will be considered as the same letter. Therefore, we must adhere to the principle of "protecting the exclusive right to use a trademark is limited to the registered trademark". The protection scope of standard printed words without originality is smaller than that of other writing styles. Therefore, it is best for trademark registrants to register word mark with their own style to reflect the distinctiveness of the trademark in writing form.