Surgical treatment is recommended for biphasic synovioma of the popliteal fossa, and the common surgical procedures are popliteal synovioma excision and arthroscopic popliteal cleanup. 1. Popliteal synovioma excision: usually a posterior trans-popliteal approach, incision of the popliteal fossa, layer-by-layer exposure, and cleaning of the internal popliteal lesions under direct vision, which is more traumatizing and slower to recover, but less difficult to operate, and lower medical costs. 2. Arthroscopic popliteal fossa cleaning: through the electronic endoscopic system into the knee joint to explore the popliteal fossa foci, through the special surgical instruments to clean the popliteal fossa internal, the surgical incision is minimally invasive, the recovery is faster, but the operation is more difficult, the medical cost is higher. Popliteal fossa disease is more common in clinic, once it occurs, it should go to the hospital in time and be diagnosed and treated under the guidance of professional doctors.