The invention relates to a threaded-sleeve-wheel attracting and repelling magnetic control clutch speed changer. The threaded-sleeve-wheel attracting and repelling magnetic control clutch speed changer comprises a driving shaft, a threaded sleeve, a driven movable wheel, a left blocking wheel, a left buffer wheel, a left spring, a left thrust bearing, a right thrust bearing, a right spring, a right buffer wheel, a right blocking wheel, a sleeve right end wheel, a clutch wheel, a clutch control magnetic plate, a driven shaft and a driven shaft wheel; the threaded-sleeve-wheel attracting and repelling magnetic control clutch speed changer is characterized in that the threaded sleeve sleeves the driving shaft and is connected with the driving shaft by a long bearing; the sleeve right end wheel is fixedly arranged at the rightmost end of the threaded sleeve, namely, at the right side of the right blocking wheel; the clutch wheel is arranged at the right side of the sleeve right end wheel; the clutch wheel comprises a friction disc arranged at the left side, and a permanent magnet disc positioned at the right side; three sleeve right end wheel N-pole magnetic surfaces and three sleeve right end wheel S-pole magnetic surfaces are alternately arranged on an inner circular ring of the right side surface of the sleeve right end wheel at intervals; three clutch wheel N-pole magnetic surfaces and three clutch wheel S-pole magnetic surfaces are alternately arranged on an inner circular ring of the friction disc of the clutch wheel at intervals.