To evaluate the efficacy and safety of TQ-B3139 versus crizotinib in subjects with ALK-positive NSCLC that have received one chemotherapy regimen and have not received ALK inhibitor.

Inclusion Criteria:

• 1.18 and 75 years. 2. Eastern Cooperative Oncology Group (ECOG) performance status score of 0 to 1.

  3. Life expectancy ≥12 weeks. 4. Histologically or cytologically confirmed advanced or metastatic NSCLC with ALK-positive.

  5. Has not received ALK tyrosine kinase inhibitor (TKI). 6. Has received one chemotherapy regimen for stage IIIB-IV NSCLC. 7. At least one measurable lesion. 8. Adequate organ system function. 9. Understood and signed an informed consent form.

Exclusion Criteria:

• 1. Has diagnosed and/or treated additional malignancy within 5 years prior to randomization. Exceptions include cured cancer carcinoma in situ of the cervix, intramucosal carcinoma of gastrointestinal tract, breast and melanoma skin cancers and superficial bladder tumors.

  2. Hypersensitivity to TQ-B3139 or crizotinib. 3. Has received any cancer therapy within 4 weeks or 5 times of t1/2. 4. Has received any major surgery within 4 weeks. 5. Has received any radiotherapy or minor surgery aimed to cure cancer within 2 weeks.

  6. Acute toxicity that is ≥ Grade 2 caused by previous cancer therapy. 7. Has active viral, bacterial and fungal infections within 2 weeks before the first dose.

  8. Has serious cardiovascular disease within 3 months before the first dose. 9. Has currently uncontrollable congestive heart failure. 10. Has continuous arrhythmia ≥ Grade 2, uncontrollable atrial fibrillation or QTc interval > 480ms.

  11. Has interstitial fibrosis or interstitial lung disease ≥ Grade 3. 12. Brain metastases with symptom. 13. HBsAg positive and HBV DNA positive (≥ULN);HCV antibody and HCV-RNA positive (≥ULN); HIV positive or ≥HIV ULN.

  14. Has multiple factors affecting oral medication. 15. Has received a strong CYP3A inhibitors within 7days before the first dose. 16. Has received a strong CYP3A inducers. 17. Breastfeeding or pregnant women.; Men unwilling to use adequate contraceptive measures during the study.

  18. According to the judgement of the researchers, there are other factors that subjects are not suitable for the study.