PURPOSE: A solidification prevented sweetener material composition, and a producing method thereof are provided to control the excessive adsorption of sugar into the human body.CONSTITUTION: A producing method of a solidification prevented sweetener material composition comprises a step of mixing 95-99.9wt% of sweetening material and 0.1-5wt% of edible fibers to coat particles of the sweetening material with the edible fiber. The sweetening material is obtained by mixing sugar and xylose in a weight ratio of 1:0.05-0.5. The edible fibers are indigestible maltodextrin.COPYRIGHT KIPO 2013본 발명은 고화 방지 처리된 감미 소재 조성물 및 그의 제조 방법에 관한 것으로, 보다 구체적으로는, 감미 소재 분말 입자를 식이섬유로 코팅함으로써 고화 방지 처리한 감미 소재 조성물 및 그의 제조 방법에 관한 것이다.