Pomalidomide may cause certain side effects on the blood and lymphatic system, skin and collateral tissues, gastrointestinal system, respiratory system, nervous system, musculoskeletal system, cardiovascular system, and metabolic and nutritional systems. 1. Blood and lymphatic system: adverse reactions such as thrombocytopenia, neutropenia, lymphopenia, and anemia. 2. Skin and collateral tissues: excessive sweating, dry skin, itching, and night sweats. 3. Gastrointestinal system: abdominal pain, diarrhea, vomiting and constipation. 4. Respiratory system: dyspnea, oropharyngeal pain, epistaxis and cough. 5. Nervous system: adverse reactions such as tremor, confusion, dizziness and headache. 6. Musculoskeletal: adverse reactions such as muscle spasm, muscle weakness, chest pain. 7. Cardiovascular system: atrial fibrillation, myocardial infarction, deep vein thrombosis and other adverse reactions. 8. Metabolism and nutrition: adverse reactions such as hypercalcemia, hypokalemia and hyponatremia. The use of this drug is prohibited for those who are allergic to this drug. Renal insufficiency, thrombocytopenia, deep vein thrombosis and other patients should be used with caution under medical supervision. Pomalidomide should be used under the guidance of a professional doctor to avoid unauthorized use and adverse reactions.