High blood calcium in tumor patients does not necessarily mean that they are in the terminal stage. The specific situation needs professional physician’s diagnosis. High blood calcium in tumor patients is usually caused by bone metastasis of tumor, which destroys bone tissue and releases calcium ions into the blood, which often leads to symptoms such as fatigue, loss of appetite, nausea and vomiting, etc. This indicates that the tumor has entered into the advanced stage, but it doesn’t mean that the tumor has progressed to the terminal stage, and some therapeutic measures can still be taken: 1. Lowering blood calcium: it can increase the volume by drinking a lot of water or intravenous rehydration, and at the same time use diuretics such as furosemide to lower the blood calcium, and if the serious drug treatment is ineffective, it can be effectively lowered by dialysis, and other drugs to lower the blood calcium include calcitonin, oral phosphorus, glucocorticosteroids and so on. 2. Anti-tumor therapy: according to the specific tumor pathology, chemotherapy, radiotherapy, targeted therapy and other means should be chosen. 3. Anti-bone metabolism treatment: drugs that inhibit osteoclast activity can be used to inhibit the activity of osteoclasts, such as desutumumab, zoledronic acid and other drugs. Tumor patients with hypercalcemia must seek timely medical treatment according to the specific tumor type and disease development.