The present invention is coupled to and separated from the upper and lower coupling pivot shaft provided in the fixing bracket of the loader in the upper, lower coupling release groove provided in the adapter frame provided on both sides of the tractor, in conjunction with the lower coupling pivot shaft fixed bracket The rotating part installed on the rotating part and the fixing part and the releasing part are connected to each other so that the lower engaging rotating shaft installed on the fixing bracket can be easily rotated to both sides of the rotating part, and the lower engaging rotating shaft is provided in the lower engaging release groove provided in the adapter frame. The tractor linkage of the tractor, which makes it easier and quicker to combine and disengage the loader with the fixing brackets from the adapter frame provided on the tractor, is: A loader connection device of a tractor, comprising: an adapter frame fixed to both sides of the tractor and having upper and lower coupling release grooves formed on one side and a lower side thereof, and a loader having a fixing bracket coupled to and separated from the adapter frame； An upper coupling pivot shaft which is horizontally provided on the fixing bracket and coupled to the upper coupling release groove； A lower coupling pivot shaft provided horizontally under the fixed bracket and coupled to the lower coupling release groove； A rotating part disposed on one side of the fixing bracket and having a curved groove, and having one side of the lower coupling rotating shaft penetrated therethrough； It is characterized in that the penetrating and inserting horizontally installed on one side and the other side of the fixing bracket to constitute a fixing and releasing portion provided to rotate and fix and release the rotating part in the fixing bracket.본 발명은 트랙터의 양측에 구비된 어댑터프레임에 구비된 상,하부결합이탈홈에서 로우더의 고정브라켓에 구비된 상,하부결합회동축을 결합 및 분리를 하되,하부결합회동축과 연계되어 고정브라켓에 회동되게 설치된 회동부와 고정 및 해제부가 서로 연계작동되게하여서, 고정브라켓에 설치된 하부결
