The present invention relates to a manufacturing apparatus of fermented sawdust for a mushroom culture medium having a sorting apparatus. The manufacturing apparatus comprises: a frame having a suspension space in the center; suspension support shafts installed on both sides of an upper side of the frame to be rotatable; an up and down open sorting body installed inside the suspension space of the frame, and where a sorting net is detachably installed on the inclined floor; suspension supports fixedly installed in the front and the rear of both sides, and where a suspension connection portion and a driving connection portion are gradually comprised in a longitudinal direction; a suspension where one end of the suspension support is hinge-connected to the suspension connection portion and the other end is connected to the suspension support shaft on the frame (10) to be rotatable; a crank plate where one end of the suspension support is hinge-connected to the driving connection portion; mixers respectively installed in the front and the rear of an upper portion of the sorting net of the floor of the sorting body, and where the end of a rotary mixing support is contacted with an upper side of the sorting net; a transfer apparatus which transfers sorting sawdust which passes through the sorting net of the sorting body; and a transfer apparatus which transfers sawdust for resorting which is discharged through an outlet of the sorting body. The sorting net comprises: a first filtering net installed on an inlet portion side of the sorting body; and a second filtering net installed in the sorting body to maintain a gap from the first filtering net.본 발명은, 중앙에 현수공간을 가진 프레임; 상기 프레임 상면 양측에 회전가능케 설치되는 현수지지축; 상기 프레임의 현수공간에 마련되고, 경사진 바닥에 선별망이 착탈 가능하게 설치되는 상하 개방형 선별체; 상기 선별체 양 측벽 전후방에 장착 고정되고 현수연결부 및 구동연결부가 길이방향으로 순차 구성되는 현수지지대; 상기 현수지지대의 현수연결부에 일단이 힌지 연결되고 타 단은 상기 프레임(10) 상의 현수지지축에 회전 가능하게 연결되는 현수대; 상기 현수지지대의 구동연결부에 일단이 힌지 연결되는 크랭크판; 상기 크랭크판에 타 단이 연결되고 구동축에 편심되게 장착된 크랭크로드; 상기 선별체