The present invention relates to a soil supply structure for an underground crop harvester, and more specifically, to harvest the root crops growing in the ground so that crops and soils that are dug up and supplied are normally discharged to the inside of the harvester without being discharged to the outside. The soil supply structure for the underground crop harvester. The present invention is provided with a tractor upper connecting rod 13 and a tractor lower connecting rod 14 to be connected to the tractor and a main shaft 12a penetrating the speed reducer 12, and the power connected to the main shaft 12a. The belt 11a is connected to the engaging rod rotating shaft 17b, and connects the engaging rod rotating shaft 17b to the right side of the crop engaging rod 17 connected to the inside of the main body 11 on both sides. In the installed crop discharge structure, the chain 12c connected to the reduction sprocket 12b provided on the main shaft 12a penetrating the reducer 12 is connected to the auxiliary shaft 15 penetrating the main body 11. A belt 36 connected to the auxiliary sprocket 15a installed and connected to the auxiliary pulley 37 installed on both sides of the auxiliary shaft 15 is connected to the disc pulley 35 and connects the disc pulley 35. A fixed plate 32 for installing one disc shaft 34 is connected to the main body 11 with a fixed bolt 33, and a disc shaft connected to the fixed plate 32. It is characterized in that it is connected to the 34 and the soil supply device 30 made of a disc 31, the supply plate 38 is installed into the inner side of the main body (11).본 고안은 땅속 작물 수확기용 흙 공급구조에 관한 것으로, 더욱 상세하게는 땅속에서 성장하는 뿌리작물을 수확할 때 고랑을 파서 공급하는 농작물과 흙이 외부로 배출되지 않고 수확기 내부에 정상적으로 공급이 이루어지도록 하는 땅속 작물 수확기용 흙 공급구조에 관한 것이다.이러한 본 고안은 트렉터에 연결하는 트렉터 상부 연결대(13)와 트렉터 하부 연결대(14)가 설치되고 감속기(12)를 관통하는 메인축(12a)이 설치되고, 상기 메인축(12a)에 연결한 동력벨트(11a)가 걸림봉 회전축(17b)에 연결되며, 상기 걸림봉 회전축(17b)을 연결하며 양쪽의 본체(11) 내부에 연결한 농작물 걸림봉(17)의 우측으로 진입날(14a)을 설치한 농작물 배출구조에 있어서, 상기 감속기(12)를
