Da-jia rush is a special fiber produce growing in Yuan-li Da-jia District. From the late Ching dynasty to the Japanese Colonial Period, the rush hats first made by the aboriginals were exported massively. The rush industry, finally faded by the 1980’s, brought the farmers in this district rich bywork earnings for nearly a hundred years; from 1937 to 1943---the heyday of this industry---each rush goods maker gained a higher yearly wages than the one planting about a 4.8-acre paddy. In the rush production and marketing record, the price of the rush hats had once slumped badly because of the rough manufacture. The industry didn’t come back to its prosperity until the Japanese Colonial Government enacted the Standards of Hat Productions. In the early Retrocession, rush hats were exported immensely to the China Market. After 1949, however, the rush industry never staged a comeback. To sum up, the rush industry has affcted deeply the society and economy of Yuan-li Da-jia District, which is a topic for intensive study. Also, some mistakes stated in the previous documents will be corrected in this paper.