Records show that as long ago as the Chou dynasty, China had a well-organized medicinal system, with doctors specializing in the diagnosis and cure of common diseases, food science and veterinary science.
根據周禮記載，遠在周代，中國就已經有了相當健全的醫事制度，當時的醫生分為：疾醫、瘍醫、食醫、獸醫四科，各有所司。