There is no significant difference between the effects of cyclophosphamide orally and by infusion. Cyclophosphamide is an anti-tumor drug, and the commonly used clinical dosage forms are injection and tablet, which can generally be used in the treatment of acute and chronic lymphocytic leukemia, multiple myeloma, malignant lymphoma, testicular tumors, ovarian cancer, lung cancer, neuroblastoma, breast cancer, osteosarcoma and other diseases, and the therapeutic effects are the same regardless of whether it is chosen to be taken orally or by infusion. The adverse reactions of this product mainly include bone marrow suppression, loss of appetite, nausea and vomiting, oliguria, hematuria and proteinuria, alopecia, stomatitis, toxic hepatitis, skin pigmentation, menstrual disorders, azoospermia or spermatogenesis and pulmonary fibrosis. The use of cyclophosphamide requires attention, allergy to the drug, the presence of severe bone marrow function impairment of patients, patients with urinary tract obstruction, patients with acute infections, pregnant women, cystitis patients, lactating women prohibited the use of, as well as patients with bone marrow suppression, patients with acute porphyria, hepatic and renal function impaired should be cautious. Cyclophosphamide is a prescription drug, must be prescribed under the guidance of a doctor to get the drug, remember not to use the drug without authorization.