The increasingly intense international trade relationship advancing and developing rapidly in the global economy does not close the possibility of causing tensions that lead to trade disputes involving more than one country. This research focuses on what prompted New Zealand to sue Indonesia in the WTO, an organization involving countries in the world. In this organization, various measures toward resolving disputes occur by following existing procedures by making a complaint against the new policies issued by one of the parties, namely Indonesia, which turns out to have a loss effect on the party concerned, namely New Zealand. Due to this imbalance, there exist several stages of dispute resolution. This research focuses on the relationship between New Zealand and Indonesia before the dispute to the resolution and explaining how the lawsuit occurs.