Objective:to evaluate the effectiveness of auriculotherapy in reducing chronic musculoskeletal pain in the spine of health workers.Method:a randomized, triple-blind clinical trial conducted with health workers diagnosed with chronic spinal pain. Eight sessions of auriculotherapy with seeds were applied, twoperweek. The outcomes were measured with the Numerical Pain Scale, Brief Pain Inventory, Rolland-Morris Disability Questionnaire and SF-36 instruments, in the 1st, 4thand 8thsession, and in the 15-day follow-up period. Descriptive and inferential analyses were performed.Results:34 workers took part in the Intervention Group and 33 in the Control Group, and both presented reduced pain intensity (p>0.05). In the follow-up period, there was a greater reduction in the Intervention Group (3.32 ± 0.42), when compared to the Control Group (5.00 ± 0.43) (p=0.007). In quality of life, there was improved vitality (p=0.012) and limitation due to emotional aspects (p=0.025). The relationship between auriculotherapy, physical disability and pain interference did not differ between the groups (p>0.05). Medication use in the follow-up period remained unchanged in the Control Group (77.8%) when compared to the Intervention Group (22.2%) (p=0.013).Conclusion:auriculotherapy exerted the same effect between the groups on pain intensity, lasting longer in the follow-up period. There was an improvement in quality of life and a reduction in medication use. REBEC: RBR-3jvmdn.