Business ethics reflects the basic purpose of a company, whether it aims to pursue maximum profit of its shareholders and ignore the influences to the other concerns or it is responsible for its employees, customers, and even the whole society. Take China Mobile as an example, it was exposed that China Mobile traded the phone numbers of its users with other companies who used texts or phone-calls to spread commercial advertisements to the public. Millions of the users of Chine Mobile somehow underwent the harassment of text messages and calls that came from unknown numbers, which highly affected the normal communications. An authoritative anti-counterfeiting TV program in China has disclosed the truth of this issue; however, because of the high speed of information dissemination, the rubbish messages now still bother people. It is undisputed that keeping customers’ personal information should be one of the business ethics of a mobile operator. However, China Mobile did not concern its responsibility to the customers and the society. Finally it makes China Mobile to face the crisis of reputation.