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Objective:To study the mechanisms of pancreatic cancer treatment with Kanglaite combined Gemcitabine by investigating the relationship between the apoptosis and the expression of bcl-2, Bax and VEGF in pancreatic cancer cells.Methods:Nude mouse subcutaneous transplantation tumor model of Human PC-3 pancreatic cancer was established; the expressions of bcl-2, Bax and VEGF of transplantation tumor cell were determined; the earlier apoptosis rate of pancreatic cancer cell and the gross tumor volume were determined. Results:Kanglaite combined Gemcitabine remarkably decreased the protein expression of bcl-2,raised the expression of Bax,increased the apoptosis rate of the pancreatic cancer and contract the gross tumor volume. Kanglaite greatly decreased the protein expression of VEGF of the tumor cell. Conclusion:Therapeutic efficacy of Kanglaite combined Gemcitabine is far better than separate use of the two medicines in the pancreatic cancer transplantation tumor treatment.