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Objective: We studied the relationship between impact of dose distribution and energy of radioactive ray in teletherapy with contraceptive ring. Methods: The SI Virtual Water Phantom was used to monitor medium of dose. PTW ionization chamber was used to detect the dose. AP-PA (10cm×10cm) and SAD technique were adopted. Monitoring dose of different locations with different energy of radioactive ray in AP and PA respectively with and without contraceptive ring, repeated 5 times. Results: Dose of with contraceptive ring was lower than that of without contraceptive ring in AP 6 MV- X-ray (P0.05). Dose of except for the center was higher than that of without contraceptive ring in AP and PA 15 MV-X-ray (P<0.05). For locations, doses of the upper, the left and right were higher than that of the center in AP 6 MV-X-ray (P0.05). In AP and PA 15 MV-X-ray, doses of the upper, the left and right was higher than that of the center (P<0.05). Conclusion: Metallic contraceptive ring would effect the close distribution of radioactive ray, but influence degree related to locations of contraceptive ring and energy of radioactive ray.