PROBLEM TO BE SOLVED: To provide a ridge forming machine that facilitates operation of a tractor during work and is capable of performing proper ridge-coating work.SOLUTION: A ridge forming unit 3 has a cylindrical rotating body 30 for forming a ridge upper surface, and also a conical rotating body 31 installed at one end side of the cylindrical rotating body 30 and forming a ridge side. The conical rotating body 31 is provided in a turning edge side of a transmission frame 74 of a vertically freely turning state to a body frame 7 and can be adjusted in a vertical position to a soil banking part 2. A ridge forming machine is characterized as follows: a discotic ground-engaging wheel 5 provided in a vertical position adjusting manner and having a lower end sticking in a field surface part and rotationally moving in a traveling direction is provided in the transmission frame 74 the ground-engaging wheel 5 is formed such that the conical rotating body 31 side in the lateral direction is planar and the other side is formed in a truncated cone shape and a scraper 52 for peeling the attaching soil is provided in a truncated-cone-shaped slope.SELECTED DRAWING: Figure 1【課題】作業時のトラクタの操縦が容易で適正な畦塗り作業が行える畦形成機を提供する。【解決手段】畦成形部3は畦上面を成形する円筒状回転体30と、円筒状回転体30の一端側に取付けられ畦側面を成形する円錐状回転体31とを有し、円錐状回転体31は、本体フレーム7に対し上下方向回動自在の伝動フレーム74の回動端側に設けられ、土盛部2に対し上下位置を調整可能であり、伝動フレーム74には、上下位置調整可能に設けられ、下端部が圃場表面部に刺さり込み進行方向に回転移動する円盤状の接地輪5が設けられ、接地輪5は、左右方向の円錐状回転体31側が平面状であり、他方側が円錐台状に形成されていて、円錐台状の斜面部には、付着する土を剥離するスクレーパ52が設けられている畦成形機による。【選択図】 図1