The exclusion criteria were (1) isolated L4 CD; (2) disease including symptomatic stenosis of intestine or abdominal abscess requiring immediate surgery; (3) Current or past history of malignancy or organ transplantation; (4) Serious infections within 3 months; (5) Previous history of neuropathy or symptoms of neuropathy or abnormal electromyography prior to thalidomide; (6) infliximab treatment in the previous 8 weeks; (7) progressive or uncontrolled renal, hepatic, hematological, pulmonary and cardiac disease and（8）ongoing pregnancy.