A manage machine including leg frame, supporting portion set in the leg frame and frame with gate shape of leg support portion. The support frame set in the leg frame keep separating from and press upon the ground, so as to support the manage machine. When the length between the lower part of the leg frame and the lower part of the leg support portion is shorter than the predefined length, the support arm press upon the ground.履帶的腳架和具備設置於腳架的橫梁部、腳支持部的門形架構成的管理機。設置於腳支持部的支撑架維持離開、壓接地面的關係，以支撑臂支持管理機。腳架下段和腳支持部下端之間的長度為預定長度時，支撐臂離開地面，腳架下段和腳支持部下端之間的長度比預定長度短時，支撐臂壓接於地面。
