With a large amount of evidence-based medical evidence confirming that amputation does not improve patient survival, limb-sparing surgery for malignant bone tumors has become a consensus. Meanwhile, with a large number of cases confirming that perioperative chemotherapy can significantly improve the cure rate and survival of malignant bone tumors, surgical resection + preoperative and postoperative adjuvant chemotherapy has become the current standard of treatment for malignant bone tumors. However, we still sadly found that in many primary hospitals and even large hospitals in central cities, patients with malignant limb tumors were amputated at an early stage, or the tumors spread or inevitably recurred because of inappropriate surgery. At the same time, we also found two bad tendencies, one is to emphasize only the importance of surgery and neglect or even ignore chemotherapy before and after surgery. Studies have confirmed that in addition to the primary lesions of malignant bone tumors, there may be tiny metastases that cannot be detected by conventional imaging in other organs of the body in the early stage, and surgery can only solve the local lesions, while the metastases in other parts can only be controlled and removed by effective chemotherapy. At the same time, preoperative chemotherapy can also kill a large number of tumors at the primary site, slow down its growth and confine it, which is conducive to the determination of safe borders during surgery and may enable some patients who originally lacked limb preservation conditions to undergo limb preservation surgery again. In addition, preoperative chemotherapy can be administered, and postoperative prognosis can be determined and postoperative chemotherapy regimens modified by testing the necrosis rate of the resected tumor specimen. Another negative tendency is to emphasize malignant bone tumors as a systemic disease and to neglect or even avoid complete resection of local tumors. In malignant bone tumor, the primary lesion of bone is the root cause of systemic metastasis. Only by completely controlling the voluntary lesion, it is possible to effectively control the disease development or even obtain long-term tumor-free survival. Any reckless and incomplete resection of the primary lesion of malignant bone tumor may bring devastating consequences to the patient, either having to perform amputation or stimulating the rapid growth of tumor to spread and metastasis within a short period of time. The growth rate of malignant tumor has its own regularity. When the volume is small in early stage, it grows rapidly, but when the volume is large in late stage, it grows slowly. The inevitable consequence of an incomplete excision of a malignant tumor of a limb is that the local recurrence and more rapid growth will occur soon, and especially serious is the spread of the tumor due to the destruction of the original growth barrier by surgery. Therefore, any partial resection of tumor under the pretext that malignant tumor is a systemic disease and for the purpose of so-called tumor load reduction should be strongly opposed. We urge our orthopedic colleagues who lack experience in the treatment of bone and soft tissue tumors to refrain from performing bone and soft tissue tumor surgery rashly. At the same time, we also remind patients and their family members suffering from bone and soft tissue tumors to go to experienced hospitals and receive proper treatment from experienced doctors.