Sushi originated in China. In the 200 AD after Korea surrendered to China, that is, the post-Han era, China began to spread this kind of food, and it was said that it was introduced by the marine nationalities in Northeast Asia (Fuyu, Donglai, Mahan, etc.). In the early days when Chinese characters were introduced to Japan, Japan added its own understanding of Chinese characters and replaced some Japanese foods with Chinese characters with similar or different meanings, so the Japanese word "Si Wu Xi" became "Fu" and "Sa Xi Mi" became "Yi".

In the post-Han period, small food made of rice, raw fish and sauce appeared in Japan, which was much smaller than that in China. This is the ancestor of Japanese sushi later. At the same time, the fish sticks with rice in China can be regarded as the brothers or neighbors of sushi. It's just that it's not widely circulated and popularized nowadays.

In 700 AD, that is, Nara era, the early Japanese small food was named sushi, which was used as a holiday food. Sushi has gradually become a daily food, especially some fishermen's rice balls pickled with some vinegar, plus some seafood or meat, pressed into a small piece and neatly arranged in a small wooden box as food along the way. During the Kamakura shogunate era, sushi has been widely spread, becoming an ordinary item and a symbol of Japanese food culture.