Electroacupuncture on Treating Cancer-related Depression

Inclusion Criteria: 1. Presence of depression attributed to cancer itself or cancer-related treatments, meeting the diagnostic criteria for depressive disorder（DSM-V). 2. Age between 18 and 75 years, regardless of sex. 3. Hamilton Depression Rating Scale-17 (HDRS-17) total score \>17 at baseline. 4. Eastern Cooperative Oncology Group (ECOG) performance status score of ≤2. 5. No previous exposure to acupuncture treatment. 6. Ability to understand the study procedures and willingness to provide written informed consent. Exclusion Criteria: 1. Planned to undergo surgery, chemotherapy, radiotherapy, immunotherapy, or other active cancer-related treatments during the study period. 2. History of major depressive episodes prior to cancer diagnosis. 3. Pain Rating Index (PRI) score ≥4 due to cancer-related pain. 4. Estimated life expectancy of 12 months or less. 5. Presence of severe ulcers, abscesses, or active skin infections at or near the acupuncture sites. 6. Clinically significant dysfunction of major organs, including severe cardiac, cerebral, hepatic, renal impairment; decompensated pulmonary disease; or other serious systemic illnesses. 7. Pregnant or breastfeeding women. 8. Participation in another clinical trial within the past 30 days. 9. Patients with a cardiac pacemaker or other implanted electronic medical devices.