A spinning machine for stopping rotation of spindles of the spinning machine, the spinning machine including: a spindle rail; two spindles arranged side by side in a longitudinal direction of the spindle rail; and a spindle belt that is mounted over the two spindles in a surrounding manner and a spindle brake device, the spindle brake device comprising: a brake body (21, 121, 221); a separation roller unit mounted to the brake body (21, 121, 221); and a brake shoe mounted to the brake body (21, 121, 221), characterized in that the spindle rail has a braking standby position and a braking actuating position, wherein the braking standby position is away from the spindles in a longitudinal direction of the spindle rail, and the braking actuating position is at the same position as one of the spindles in the longitudinal direction of the spindle rail, a guide portion (31, 32, 42) adapted to guide movement of the brake body (21, 121, 221) in a width direction of the spindle rail is provided at each of the braking standby position and the braking actuating position, the brake body (21, 121, 221) is adapted to be repositionable between the braking standby position and the braking actuating position, when the brake body (21, 121, 221) is disposed at the braking standby position, the separation roller unit is located separated from the spindle belt, and when the brake body (21, 121, 221) is disposed at the braking actuating position, the separation roller unit separates the spindle belt from the one of the spindles, and the brake shoe is pressed against the one of the spindles by a tension of the spindle belt. a spindle rail; two spindles arranged side by side in a longitudinal direction of the spindle rail; and a spindle belt that is mounted over the two spindles in a surrounding manner and a spindle brake device, the spindle brake device comprising: a brake body (21, 121, 221); a separation roller unit mounted to the brake body (21, 121, 221); and a brake shoe mounted to the brake body (21, 121, 221), a brake body (21, 121, 221); a separation roller unit mounted to the brake body (21, 121, 221); and a brake shoe mounted to the brake body (21, 121, 221), characterized in that the spindle rail has a braking standby position and a braking actuating position, wherein the braking standby position is away from the spindles in a longitudinal direction of the spindle rail, and the braking actuating position is at the same position as one of the spindles in the longitudinal direction of the spindle rail, a guide portion (31, 32, 42) adapted to guide movement of the brake body (21, 121, 221) in a width direction of the spindle rail is provided at each of the braking standby position and the braking actuating position, the brake body (21, 121, 221) is adapted to be repositionable between the braking standby position and the braking actuating position, when the brake body (21, 121, 221) is disposed at the braking standby position, the separation roller unit is located separated from the spindle belt, and when the brake body (21, 121, 221) is disposed at the braking actuating position, the separation roller unit separates the spindle belt from the one of the spindles, and the brake shoe is pressed against the one of the spindles by a tension of the spindle belt.