The invention relates to a method for inhibiting euPTX3 to treat nasopharyngeal carcinoma by an amino acid sequence, comprising administering an effective amount of the amino acid sequence to a subject in need. The amino acid sequence can be used to inhibit euPTX3 from promoting the migration and invasion of nasopharyngeal carcinoma cells, promoting angiogenesis and inhibiting macrophage phagocytosis to further treat nasopharyngeal carcinoma.
