Malignant tumors of the left maxilla are a serious condition that requires prompt treatment. Since the maxilla is connected to other maxillofacial bones, a malignant tumor of the left maxilla can also affect other related bones. Tumor curettage and maxillary osteotomy are usually chosen for treatment. The impact of the disease is still serious because after maxillary osteotomy, it can be accompanied by adverse symptoms such as facial collapse deformity, oral fistula, and dysarthria, which in turn affects facial appearance and function. It should be noted that due to the slow course of bone tumors, it is easy to lead to no typical clinical symptoms in the early stage, and it is difficult to pay attention in the early stage of the disease. However, malignant tumors develop rapidly, and in the late stage of the disease, local proliferation and even distant metastasis will occur to varying degrees, so that it loses the opportunity for effective treatment, so left maxillary malignant tumors should be treated as soon as possible. It is recommended that once diagnosed with a malignant tumor of the left maxilla, you should consult a doctor in a timely manner, and strictly follow the doctor’s instructions for treatment, so as not to delay the condition.