The aim of this study is to observe the effectiveness of complex Korean medicine treatment applied to the patients with degenerative meniscal tear and the correlation among clinical effectiveness, body mass index (BMI) and Kellgren-Lawrence grade (KL-grade). Methods The study participants were 38 patients who had been diagnosed with degenerative meniscal tear. Participants were classified by BMI, KL-grade and treated with acupuncture, electroacupuncture and pharmacopuncture. Clinical outcomes were assessed using Numeric Rating Scale (NRS), Western Ontario and McMaster Universities Arthritis Index (WOMAC Index) and EuroQol-5 Dimension Index (EQ-5D Index). Results Both NRS and WOMAC scores were significantly reduced after treatment (p ＜0.001). The EQ-5D for assessing quality of life showed further improvement (p＜0.05). A statistically significant correlation was observed between the BMI and NRS, EQ-5D. KL-grade was correlated with WOMAC. Conclusions These results show that complex Korean medicine treatment to the patient with degenerative meniscal tear may be effective as a conservative therapy. Further research is required to confirm the effectiveness of Korean medicine treatment.