In this study, it will be explained, because of globalization of trade, the relationship among trade and competition policies happened very important depending on necessarly of global competition policy and developing countries. In the era of competition policy against among cartels, mergers and abuse of market power but this rules will be ineffective in the absence of global competition policy. The developments like anti-competetive beheviours of firms increased in the process of trade globalisation. Because of free trade conditions, many global anticompetetive practices like global cartels and global mergers with international spillovers occur. Trade related international competition issues are getting important. In this context, developing countries have much bigger problems. Consequently, globalization of world trade needs to establish a global competition order by effective policies.