The business judgment rules, as the last “safe haven” for directors to fulfill their business decisions normally and avoid personal responsibility, are irreplaceable in improving the enthusiasm of directors to perform their duties and helping companies seize business opportunities. Abroad, especially in countries such as the United States, mature commercial judgment rules have already been established, and the practices of these countries have a positive reference value for the introduction of commercial judgment rules in China. In addition, there have been numerous cases in China where commercial judgment rules have been used to rule on cases in judicial practice, and the legislative purpose of the new Company Law’s “entrepreneurial spirit” also requires commercial judgment rules to provide protection for directors. Therefore, it is necessary for China to introduce commercial judgment rules. This article will analyze the theory of introducing commercial judgment rules, the enlightenment of foreign achievements, and the necessity from three aspects.