The puffer fish project, also known as dolphin fish project. It refers to a plan made by Japan in A.D. 1930 to resettle European Jewish refugees who fled Nazi in the Asian continent controlled by Japan for the benefit of Japan.

The general content of the plan is to supplement Japanese wealth with Jewish wealth. At that time, in order to attract Jews to the northeast of China, Japanese business and political circles came forward in succession. On February 1937, Kaufman and Rabbi Kiselev, the Jewish leader in the northeast of China, were convened, and then the "Far East Jewish Community Conference" was held. Soon, the Japanese attracted many Jews in the northeast. By 1939, the number of Jews in northeast China had increased to about100000.

With the help of Jews, the industry and commerce in Northeast China once showed signs of recovery. However, Japan's acceptance of Jews caused dissatisfaction in Germany. So the Japanese had to start squeezing the living space of Jews, trying to squeeze out their surplus value in the remaining time. As a result, under Japanese oppression, the Jewish plan to establish settlements in northeast China failed.