PURPOSE: A manufacturing method of a cookie is provided to have functions of rice bran or half-crushed rice. CONSTITUTION: A cookie comprises 1-40 parts by weight of rice-processed by-product based on 100 parts by weight of flour. The cookie additional includes 1-40 parts by weight of a functional component based on 100 parts by weight of the flour. The functional component is one or more selected from fenugreek seed and ramie fabric leaf. The flour is one or more selected from rice flour, wheat flour, and corn flour. The rice-processed by-product is one or more selected from rice bran or half-crushed rice. The rice bran has a moisture content of 2-5% and an average particle size of 180-250㎛. The half-crushed rice has an average particle diameter of 15-25㎛ and moisture content of 10-15%.본 발명은 쌀 가공 부산물을 포함하는 쿠키 및 이의 제조방법에 관한 것으로서 보다 상세하게는 곡물가루를 주재료로 하는 쿠키에 있어서 쌀 가공 부산물을 포함하는 쿠키로서 상기 쌀 가공 부산물은 곡물가루 100중량부에 대하여 1∼40중량부를 포함하는 것을 특징으로 하는 쌀 가공 부산물을 포함하는 쿠키 및 이의 제조방법에 관한 것이다.