In the midst of the change in the era of digital technology, trade competition has been exponentially increased. As a result, both the existing business operators with a dominant market power and new entrepreneurs trying to enter the market are in dire need to create innovate and adapt new business strategies to gain market share from other competitors. The Trade Competition Act serves as a trading constitution by providing a benchmark for promoting free and fair competition in a market. Any large business operator who fall within the scope of market dominant (single economic entity) and the first top three business operators in a relevant mark (the collective economic entity) are subject to the enforcement of the Trade Competition Act. Nevertheless, being business persons with dominant market power is not considered a violation of the Trade Competition Act-only if when these large business operators with dominant market abuse their market power unreasonably; such as, unfairly determining or maintaining the purchasing or selling price, stipulating unjust conditions for their trading partners, or Interfering with other peopleûs business without reasonable ground etc. Nevertheless, in the event that it is uncertain whether a business action is contrary to the Competition Act, business operators may file a request to the Trade Competition Commission to determine in advance that their business conduct violates the provision on abuse of dominant market power.