Cereals and pulses are the most important food and its raw materials. Each year, more than 450 million tons of cereals and 19 million tons of pulses (excluding soya beans) are traded in the international market. As the most authoritative and comprehensive standards developing organization, International Organization for Standardization (ISO) elaborates the international standards for cereals and pulses, which plays an important role in coordinating and promoting international trade, improving trade efficiency, and ensuring the quality and safety for grain. This article introduces the work scope, organizational structure, and standard framework of the Cereals and pulses Subcommittee of ISO, as well as the achievements of China's participation in international standardization of grains. In the future, the ISO Cereals and pulses Subcommittee will work with its members to focus on nutrition and health products, new testing technologies for quality and safety, as well as food loss and waste.