This paper comes with the following conclusions: The terms "false" and "misleading" used in Art. 21 of the Fair Trade Law should be equivalent to and interchangeable with the term "deception" used in Art. 24 of the Fair Trade Law. It is needless to distinguish between "false" and "misleading". What is to be prevented by suing those terms is the disappointment of one's subjective expectation with objective reality. Advertising using endorsement and testimonials and appealing to exact experience instead of emotion must be truthful. In the case of litigations, the truthfulness of an ad which can be verified must be proven by the person who made this ad. However, the likelihood of misleading a substantial number of people, is to be proven by the Fair Trade Commission. The so-called correction ad helps the misled to correct his misconception and decision-making, and even to modify his contractual relationship with the person who made this ad, is therefore more meaningful in preventing misleading advertising and should be demanded by the Fair Trade Commission more often when deception is determined.