PROBLEM TO BE SOLVED: To provide a ridge-forming machine in which field scattered matter such as straw or grass on the field surface scattered in the traveling direction forward position of a reaction force receiving member and a disk member can be buried in the field, the entanglement of the field scattered matter to the reaction force receiving member and the disk member can be prevented, the straight traveling ability of a machine frame can be improved by the field penetration of the reaction force receiving member and the disk member, and thereby good ridge-forming work can be performed.SOLUTION: A ridge-forming machine is provided with a reaction force receiving member 41 for receiving rotary ridge-forming reaction force by a ridge-forming mechanism 12, and is provided with a disk member 42 capable of burying field scattered matter L such as straw or grass on the field surface M in the reaction force receiving member.SELECTED DRAWING: Figure 8