Fluorouracil Implants Used for Intraperitoneal Chemotherapy During Operation for Treatment of Phase III Gastric Cancer.

Inclusion Criteria: 1. primary gastric cancer, Phase III 2. D2 radical gastrectomy(R0) 3. 18 year old or above 4. KPS≥70%； 5. suitable hematologic function: ANC≥1.5×109/L, PLC≥80×109/L 6. suitable liver function: Total bilirubin≤1.5×normal ULN, AST and ALT≤2.5×normal ULN. 7. suitable renal function: Cr≤1.5×normal ULN,or Ccr≥50 ml/min 8 .for the female subject, pregnancy test must be negative in 27 hours before enrollment . 9\. the authorized ICF must be signed Exclusion Criteria: 1. non-initial gastric cancer； 2. having the other uncontrolled diseases. 3. obvious loss of weight ( more than 10% within 6 weeks ) 4. the female in pregnancy or feeding. 5. contraindication to study drug 6. participating in other clinical trial and at the time of treatment period.