One China policy is restraining Taiwan’s trade cooperation with other countries. Furthermore, Taiwan is not de jure country based on the United Nations, therefore it's hard for Taiwan to build a diplomatic relations with any countries, hence Taiwan only have trade cooperation instead of diplomatic cooperation including Indonesia. In response to this case, this research aims to discuss trade relations between Indonesia and Taiwan, it happens because Indonesia’s adherence to the one-China policy. Beside, Indonesia and Taiwan are the member of World Trade Organization and WTO itself requires the member to obligate one China policy.