Abstract: An exercise machine for burning fat and strengthening muscles is provided. The exercise machine includes a base frame (50), a drive unit (60), an undulator (RD), and a floorboard (80). The base frame (50) is substantially horizontal. The drive unit (60) is disposed on one side of the base frame (50), and provides driving force. The undulator (RD) is disposed at a top of the base frame (50), and undulates three-dimensionally through the driving force provided by the drive unit (60). The floorboard (80) is connected to the undulator (RD), undulates according to the three-dimensional undulating of the undulator (RD), and provides a user mounted thereon with fat burning and muscle strengthening three-dimensional exercise. The floorboard (80) undulates three-dimensionally by means of the undulator (RD), providing exercise required to burn fat and strengthen muscles.