Objective To observe the effects of rotary magnetic to bone mineral content(BMC), bone specific alkaline phosphatase (BAP) and deoxypyridinoline crosslinks (DPD), and to explore if there is synergistic action between the rotary magnetic field and the Chinese Medicine. Methods Experimental rats were exposed to the magnetic field 2 hours a day for 15 days then measured BMC, BAP and DPD then compared with that of the control rats. Results After rotary magnetic treatment, both female and male rats demonstrated a significant increase in BMC and BAP, and a simultaneous decrease in DPD content. Addition of Chinese medicine did not cause any significant difference of these parameters. Conclusion In rats with ovariotomy, rotary magnetic field can increase BAP and decrease DPD in a short time,and increase bone mineral content. These effects were similar in both female and male rats.