The utility model discloses a wind spring protection hour meter, which comprises a meter head, a movement hand-setting stem and a threaded bar head device which is assembled on the meter head, the threaded bar head device comprises a bar head and a bar tube, two ends of the bar tube are in thread connected with the bar head and the meter head respectively, the bar head and the bar tube are internally equipped with clutch devices, one end of the clutch device is connected with the movement handsetting stem, when the bar head is in thread meshing with the bar tube, the clutch devices are separated, and when the bar head is in thread separating with the bar tube, the clutch devices are meshed. The wind spring protection hour meter overcomes shortages of the prior art, is convenient and practical, and prevents strip-breaking caused by locking the bar head when the hour meter is fully wound.