The present study will be a randomized, control, multicenter phase II study of metastatic nasopharyngeal carcinoma (NPC) treated with evacizumab (AVASTIN,Roch) with paclitaxel and carboplatin regimen (TC+AVASTIN) or carboplatin/paclitaxel alone (TC). The population consists of metastatic nasopharyngeal carcinoma (NPC) that failed the radical radiotherapy or chemotherapy-naïve advanced NPC (stage IV). The effectiveness and side effects will be evaluated according to RECIST 1.1 and NCI-CTC AE V4.0.TEORTC QLQ-C30 and EORTC QLQ-H&N35 are used to measure PRO outcome for this study.