The primary end point is the disease-free survival(DFS).The secondary end point is overall survival(OS),the drug safety and tolerance, the occurrence of hand foot skin reaction(HFSR) at the week of 3,6,12,the skin toxicity(not include HFSR) higher than CTCAE(Common Terminology Criteria for Adverse Events) Grade 2 at the 12th week, the incidence of HFSR after the Urea (10% or 5%) based cream intervention treatment.