The purpose of this study is to evaluate the safety and efficacy of HepaSphere interventional therapy using digital subtraction angiography（DSA） for nasopharyngeal carcinoma.

By enrolling patients with nasopharyngeal carcinoma adapted to enrolled criteria, this study will document for the first time the safety and the short and long term efficacy of HepaSphere interventional therapy using digital subtraction angiography （DSA） for nasopharyngeal carcinoma.

Inclusion Criteria:

1. Age:18-80
2. Karnofsky performance status >60
3. Diagnosis of nasopharyngeal carcinoma based on histology or the current accepted radiological measures.
4. Classification tumor,nodes,metastasis-classification(TNM) stage: Ⅱ,Ⅲ,Ⅳ
5. Will receive interventional therapy
6. Life expectancy: Greater than 3 months
7. Patients' routine blood test, liver function and kidney function have no obvious abnormalities
8. Ability to understand the study protocol and a willingness to sign a written informed consent document

Exclusion Criteria:

1. Patients with other primary tumor except nasopharyngeal carcinoma
2. History of coagulation disorders or anemia