PROBLEM TO BE SOLVED: To provide a levee-forming machine whose controller and control program can easily and simply be operated to lower the total production cost, in stead of an implement requiring such a skill that a levee-forming work at an un-worked corner of a field such as a paddy field is performed, while a travel machine is backward travelled.SOLUTION: This levee-forming machine has a controller for performing a non-parallel travel levee-forming work for forming a straight continuous levee, while a travel machine turns and travels in a direction separated from the levee, has a detection means 6 for detecting the travel direction displacement of a levee-forming work portion 4 in the levee-forming work portion 4, operates a second horizontal rotation means on the basis of the displacement to control the travel direction of the levee-forming work portion 4 in a constant direction, on a non-parallel travel levee-forming work, and controls a first horizontal rotation means only by alternately repeatedly controlling a free state and a fixed state for a preset execution time to carry out levee-forming works.COPYRIGHT: (C)2010,JPO&INPIT【課題】水田等の圃場の作業残隅部の畦成形作業を走行機を後進させて行うような熟練を要する作業機ではなく、制御装置や制御プログラムが簡易で操作が簡単であるとともに、全体の製造コストを低くできる畦成形機の提供。【解決手段】走行機が畦から離れる方向に旋回走行しながら直線状の連続した畦を成形する非平行走行畦成形作業が行える制御部を有し、非平行走行畦成形作業時は、畦成形作業部4に畦成形作業部4の進行方向の変位量を検知する検知手段6が設けられていて、変位量に基づき第2水平回動手段を作動させて畦成形作業部4の進行方向を一定方向とする制御を行うとともに、第1水平回動手段はフリー状態と固定状態を交互に予め設定した実行時間で繰り返し行う制御のみにより制御されて畦成形作業を行う畦成形機による。【選択図】図1