The invention relates to an amino acid sequence for inhibiting PTX3 to treat nasopharyngeal carcinoma. It can be used to inhibit PTX3 from promoting the movement and invasion of nasopharyngeal carcinoma cells, promoting angiogenesis and phagocytosis to further treat nasopharyngeal carcinoma.本發明係有關於一種抑制PTX3治療鼻咽癌之胺基酸序列,可抑制PTX3對鼻咽癌細胞的移動與侵犯之促進、血管新生之促進與巨噬作用之抑制,進而治療鼻咽癌。