As the basic unit of proteins，amino acids play an important role in the nutritional health of people and animals． Currently，the global amino acid industry has developed into a large industrial group with a wide range of varieties and complete categories，becoming one of the pillar fermentation industries． Due to the high demand of amino acids，the world's largest amino acid producers have competitively developed production technologies to secure the supply of amino acids． This paper reviews the demand and price trends of amino acid products，the distribution pattern of amino acid manufacturers and the development of amino acid technology．