A mowing machine and a traveling body capable of traveling on a slope more stably. A mower 10 includes a base portion 20, a first crawler 30a disposed on one side of the base portion 20, a second crawler 30b disposed on the other side of the base portion 20, and a first crawler 30b. An angle changing mechanism 40 that changes the angle of the first crawler 30a and the second crawler 30b with respect to the traveling surface. The angle changing mechanism 40 has one end portion rotatably connected to the base portion 20, a first crawler mounting portion 42 a to which the first crawler 30 a is attached, and one end portion rotatably connected to the base portion 20. A second crawler mounting portion 42b to which the second crawler 30b is mounted, a connecting member 44a that rotatably connects the first crawler mounting portion 42a and the second crawler mounting portion 42b, the base portion 20, and the first crawler mounting portion 42b. And a drive unit 46 that moves any one of the crawler mounting part 42a, the second crawler mounting part 42b, and the connecting member 44a. [Selection] Figure 1
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