Abstract: Regarding the relationship between ZHU Xi and the prime minister WANG Huai, the scholars always focus on their disputes and bad association after ZHU Xi impeached TANG Zhong-you in the ninth year of Chunxi and then WANG Huai opposed the doctrine of the Dao. However, very few people has paid attention to their intimate association before these events. We can learn the whole process of their association based on the letters from ZHU Xi to WANG Huai and other related historical records. In September of the eighth year Chunxi, thanks to WANG Huai’s recommendation, ZHU Xi was promoted to the manage the official granary in east Zhejiang. According to ZHU Xi’s Notes on Establishing Wufu Granary in Chong’an County, Jianning Prefecture, WANG Huai spoke highly of ZHU’s measures of reliving famine at that time. We can see that they had a very good relationship. However, they did not contact each other anymore after ZHU Xi impeached TANG Zhong-you .