A spinning machine includes a plurality of spinning units, each spinning unit having a pneumatic spinning device which twists a fiber bundle F by air. Each spinning unit includes a compressed air feeding device, a first air pipe, and a cleanser supplying device. The compressed air feeding device feeds compressed air. The first air pipe guides the air fed by the compressed air feeding device. The cleanser supplying device adds cleanser to the air flowing through the first pipe. The cleanser supplying device adds the cleanser at upstream of a branch point where the air flowing through the first air pipe branches off to each of the pneumatic spinning devices.