Abstract: The Pacific Science Congress was a comprehensive international academic congress, which had a significant impact on science during the first half of the twentieth century in the Pacific area and even around the world. During the period of the Republic of China, the congress was held seven times, however, the Republic of China didn't hold once, even as one of the members of the Pacific Science Association and one of the powers in the Pacific area. In fact, at that time, the Chinese scholars with Zhu Kezhen as a representative, had the plan that China held the congress once, and continuously made corresponding adjustments to the specific content of the plan while the political situation changed. However, due to the political instability and the scientific development was still in its initial stage, and the limited investment from government; moreover, in 1937, Japan launched an all-out war of invasion to China, and the situations in the Pacific area continuously were escalating, thus Pacific Science Congress itself stalled, and finally all these resulted in the plan of the congress held in China once vanished.