Meniscal injuries that cause persistent symptoms must be operated on, otherwise the secondary damage will be more severe and lead to cartilage damage traumatic osteoarthritis. Rest is almost the only way to treat meniscal injuries conservatively, physical therapy is almost ineffective on deeper tissues, and medications can temporarily relieve symptoms, but arthroscopic minimally invasive surgery is necessary for those who cannot be completely cured in 3 months. MRI is not the “magic sword” that determines whether surgery is needed, but depends on the specialist’s comprehensive assessment of the patient’s clinical symptoms. If treatment is delayed, a simple problem can be turned into a big problem if it is not handled properly. Surgery is mostly performed by partial meniscectomy: for barrel stem rupture, longitudinal rupture or transverse rupture. Only the central portion of the tear is removed, leaving a more stable surrounding meniscal sleeve or rim that provides significant stabilization of the tibiofemoral joint. Recovery after successful surgery is rapid, with most patients returning to basic normalcy about 2 weeks after surgery, accompanied by slight swelling, but not affecting work. Sports can be gradually resumed after one month without sequelae.