Business ethics can be defined as the critical, structured examination of how business people and institutions should behave in the world of commerce. It also examines the appropriate constrains on the pursuit of self-interest when the actions of firms affect others. “Business ethics reflects the philosophy of business“ Company’s aim is to make as many profits as possible and business ethics include the duties and rights between business and employer, customer and suppliers. With ethical systems, we can find the value and significance of good behavior and judge them so that we can make amendment and make better decisions next time. In my point of view, business ethics is not only the judgmental system but also the rules in the world of commerce. Everyone who participate in this world attempt to seek their lack by compare with business ethics. What’s more, most of people manage their company by the ethical system even part of them don’t realize. Ethics is not just about having opinions about others behavior, the main point is to seek for higher principles and theories to complete our commerce world.