The purpose of this study is to determine whether Endostar pumping into vein with Gemcitabine-Cisplatin are more effective than Endostar with Gemcitabine-Cisplatin regularly in the treatment of Non-Small Cell Lung Cancer (NSCLC).

Endostar have anti-tumor activity by against vascular endothelial growth factor for initial treatment. This study was designed to evaluate the safety and efficacy of Endostar Continued vein-pumping Combining with Gemcitabine-Cisplatin (GP)chemotherapy in patients with NSCLC,and seeking for more effective injection.

Inclusion Criteria:

1. Histologically or cytologically diagnosed NSCLC;

2. primary treatment,inoperable stage IIIB/IV NSCLC;

3. Age of 18-75years; Gender Not Required;

4. Adequate hematologic, renal, and hepatic function ,Specific index as follows:

   liver function: S-Bilirubin ≤1.5 ULN ; Transaminase≤2 ULN. renal function: S-Creatinine ≤1.2 ULN; blood urea nitrogen ≤1.2 ULN . ULN: upper normal limit. Marrow Hemopoietic Function: WBC≥4.0×10^9/l, ANC≥2.0×10^9/l platelet count ≥100×10^9/l, Hb≥100 g/l;

5. ECOG PS 0-2,Life expectancy ≥ 3 months; endure more than two cycle chemotherapy;

6. The patients have explicit lung tumor lesions and the lesions were measurable; (According to the standard of RECIST1.1, they should have at least one of accurately measurable lesions with the largest diameter ≥ 10mm by spiral CT, MRI);

7. No history of serious drug allergy;

8. Informed consent should be obtained before treatment.

Exclusion Criteria:

1. Symptomatic brain metastases with cognitive disorder,bone metastases with complications;
2. Major organ dysfunction and Serious Heart Disease( congestive heart-failure,incontrollable high-risk arrhythmia,unstable angina, valvular disease, myocardial infarct and Resistant hypertension,);
3. Serious complications and investigator consider it is unsuited enrolling;
4. Pregnant or lactating women;
5. Allergic to research drug;
6. participating in other experimental trials and receive the treatment in four weeks;
7. The position that is for observing curative effect have a radiotherapy.