Abstract: Disclosed is an indoor cycle machine providing a user with virtual experience and exercise without straining knees, the indoor cycle machine comprising: a main body rotatably coupled onto a floor portion; a vertical support having one end coupled to the floor portion and an opposite end formed with a vertical through-hole; and a saddle support having one end coupled to an upper end of the main body and an opposite end formed with a saddle, in which the saddle support passes through the vertical through-hole such that the saddle support is rotatable inside the vertical through-hole, wherein the main body is rotated on the floor portion whenever the user steps on a pedal formed on the main body.