Why does the SMS of iphone6 display qq email account?

Hello, do you mean that the contact of SMS is displayed as QQ email account? Instead of a common name or nickname or something? In addition to the service short message showing the name of the service provider, the short message should show the mobile phone number or contact name set for you. I suggest you check your contacts, if you have set a contact as an email account, edit it and change it to his name. It should not be like this.