Salts of compound (I) and pharmaceutically compositions thereof, specially a base addition salt, an acid addition salt of compound (I) and a pharmaceutically composition thereof, future the use of the compound and the pharmaceutical composition in the manufacture of a medicament for preventing, managing, treating or lessening hepatitis C virus (HCV) infection.本發明涉及式(I)所示化合物的鹽及其藥物組合物,具體涉及式(I)所示化合物的鹼加成鹽、酸加成鹽及其藥物組合物,進一步涉及所述化合物或所述藥物組合物在製備藥物中的用途,尤其是在製備用於預防、處理、治療或減輕丙型肝炎病毒(HCV)感染的藥物中的用途。