The precautions for chronic granulocytic leukemia mainly include regular checkups, taking medication on time, and developing good living habits. 1. Regular checkups: pay attention to regular checkups on the size and texture of the spleen and changes in blood counts, so that doctors can understand the development of the disease and the efficacy of the drugs, and adjust the dosage of the drugs according to their own conditions. 2. take the drug on time: patients need to take the drug on time to achieve the best therapeutic effect, patients also need to understand the side effects of the drug and the related precautions, for example, hydroxyurea can cause myelosuppression and so on, so need to regularly review the blood routine, in order to avoid the occurrence of serious adverse reactions. 3. Adopt good living habits: when splenomegaly causes abdominal distension and abdominal pain, it is necessary to pay attention to bed rest and eat and drink a small amount of food and water several times in order to reduce abdominal distension. In addition, it is necessary to ensure sufficient rest and sleep. In terms of diet, you can eat high protein, high vitamin, high calorie, nutritious and easy-to-digest food. Pay attention to drinking more water during chemotherapy. Generally, chronic granulocytic leukemia can be well controlled after active treatment. It is recommended to keep optimistic mood in daily life, maintain adequate nutrition, improve one’s physical quality, go to the hospital for regular review, and strictly follow the doctor’s instructions on the use of drugs.