The preamble of GATT clearly stipulates that its purpose is: Contracting States believe that in dealing with their trade and economic affairs, they should aim at improving living standards, ensuring full employment, ensuring the huge and sustained growth of real income and effective demand, expanding the full use of world resources and developing commodity production and exchange.

By reaching mutually beneficial agreements, substantially reducing tariffs and other trade barriers and eliminating discriminatory treatment in international trade, we can make contributions to the above goals.

Second, the role of GATT.

After the implementation of GATT, global multilateral trade negotiations began. Over the past 40 years, after many negotiations on tariff concessions, the tariffs of contracting countries have been greatly reduced, and world trade has increased by more than ten times, playing an increasingly important role in the field of international trade, mainly in the following aspects:

(1) GATT provides countries with economic and trade information and cultivates economic and trade talents.

The "International Business Center" jointly organized by GATT and the United Nations collects statistical data from various countries, sorts them out and sends them to member countries, and holds various training courses to actively cultivate economic and trade talents for developing countries.

(2) GATT is a prerequisite for developing countries to win commercial concessions.

After the establishment of GATT, it has long been called the "rich club" because the free business rules it advocates are more beneficial to developed countries.

However, with the increase of developing countries' membership and strength, GATT is no longer a forum for developed countries to dominate the world, but has added many clauses in favor of developing countries, which has played a positive role in sharing international commercial interests for developing countries.

(3) GATT provides possibilities and policies for member countries to negotiate tariff concessions.

GATT provides a place for countries to negotiate tariff concessions.

Since the establishment of GATT, eight rounds of multilateral commercial negotiations have been held, and the tariff rate has been greatly reduced.

The unified tariff of developed countries decreased from 36% in 1948 to 3.8% in the mid-1990s, while that of developing countries and regions decreased to 12.7% in the same period.

This substantial tariff reduction is unprecedented in the history of international business development, which has played a great role in promoting the development of international business and created a prerequisite for realizing commercial liberalization.

(4) The General Agreement on Tariffs and Trade (GATT) provides a place and rules for resolving contradictions and disputes arising from commercial relations among member countries.

GATT has formulated a set of procedures and methods to mediate disputes among member countries in order to solve contradictions and disputes among member countries in international commercial relations.

GATT is a temporary agreement, but because of its powerful coordination mechanism, it has solved most commercial disputes.

(5) GATT has formulated a set of standard principles and rules for member countries to handle commercial relations.

By signing a large number of agreements, GATT has continuously enriched and improved the legal norms of the multilateral commercial system and comprehensively coordinated and governed international commerce.