An automatic meal serving system includes a conveyer module, a transporting module, a first food serving and heating module, and an ingredient serving module. The transporting module is located on the conveyer module for sequentially positioning a plurality of vessels on the conveyer module. The first food serving and heating module provides a variety of foods, heats one of the foods that is chosen, and feeds one of the vessels on the conveyer module with the heated food. The ingredient serving module is located beside the first food serving and heating module. The transporting module, the first food serving and heating module, and the ingredient serving module are sequentially located along the conveyer module.