The purpose of this study is to assess the efficacy and safety of patients who receive concurrent neoadjuvant chemoradiotherapy for Siewert II ，III of locally advanced HER-2 negative adenocarcinoma at gastroesophageal junction.

Inclusion Criteria:

1. Age:18 to 70 years old (man or female);

2. Confirmed to Siewert II , III of locally advanced adenocarcinoma at gastroesophageal junction and tumor long diameter ≤8 cm by gastroscopy and CT, The her-2 negative was detected by immunohistochemistry;

3. Patients with Stage for Ⅲ by CT/MRI (According to the eighth edition of AJCC );

4. Patients with measurable lesions(measuring≥10mm on spiral CT scan, satisfying the criteria in RECIST1.1);

5. Eastern Cooperative Oncology Group (ECOG) performance status of 0-1;

6. Major organ function has to meet the following certeria:

   HB≥80g/L; ANC≥1.5×109/L; PLT≥90×109/L; ALT and AST≤2.5×ULN, but<≤5×ULN if the transferanse elevation is due to liver metastases； TBIL<1.5×ULN； Serum creatinine ≤1.5×ULN;

7. Life expectancy greater than or equal to 6 months;

8. Women of childbearing age must have contraceptive measures or have test pregnancy (serum or urine) enroll the study before 7 days, and the results must be negative, and take the methods of contraception during the test and the last to have drugs after 8 weeks. Men must be contraception or has sterilization surgery during the test and the last to have drugs after 8 weeks;

9. Participants were willing to join in this study, and written informed consent, good adherence, cooperate with the follow-up.

Exclusion Criteria:

1. Allergic to apatinib, capecitabine and oxaliplatin;
2. The cytological examination of the abdominal cavity washing fluid showed that the tumor shedding cells were positive;
3. Have high blood pressure and antihypertensive drug treatment can not control (systolic blood pressure > 140 mmHg, diastolic blood pressure > 90 mmHg), Uncontrolled coronary heart disease and arrhythmia ,classⅢ-Ⅳcardiac insufficiency;
4. A variety of factors influencing oral drugs (such as unable to swallow, nausea, vomiting, chronic diarrhea and intestinal obstruction, etc);
5. Patients with tendency of gastrointestinal bleeding, including the following: a local active ulcerative lesions, and defecate occult blood (+ +); Has melena and hematemesis in two months;
6. Coagulant function abnormality (INR > 1.5 ULN, APTT > 1.5 ULN), with bleeding tendency;
7. Pregnant or lactating women;
8. Patients with other malignant tumors within 5 years (except for curable skin basal cell carcinoma and cervical carcinoma in situ);
9. History of psychiatric drugs abuse and can't quit or patients with mental disorders;
10. Less than 4 weeks from the last clinical trial;
11. The researchers think inappropriate.