The invention describes a parvovirus preparation,It includes (a) parvovirus H1 (H‑1PV) of at least 1 × 109 pfu / ml or related rodent parvovirus,The related rodent parvovirus is selected from luiiiMouse parvovirus (MMV)Mouse parvovirus (MPV)Rat microvirus (RMV)Rat parvovirus or rat virus (RV),And (b) pharmaceutically acceptable carriers,It contains 40‑50% iodixanol (w / v),0.7‑0.9mmol CaCl2 × 2H2O,50‑60mmol NaCl,0.9‑1.2mmol KCl,0.7‑0.95mg / ml tromethamine and 0.05‑0.15mg / ml EDTA calcium disodium.The preferred use is to treat brain tumors by intratumoral injection.本發明描述了一種細小病毒製劑,其包括(a)至少1×109pfu/ml的細小病毒H1(H‑1PV)或相關的嚙齒動物細小病毒,所述相關的嚙齒動物細小病毒選自LuIII、小鼠微小病毒(MMV)、小鼠細小病毒(MPV)、大鼠微小病毒(RMV)、大鼠細小病毒或大鼠病毒(RV),和(b)藥學上可接受的載體,其包含40‑50%碘克沙醇(w/v)、0.7‑0.9mmol CaCl2×2H2O、50‑60mmol NaCl、0.9‑1.2mmol KCl、0.7‑0.95mg/ml氨丁三醇和0.05‑0.15mg/ml乙二胺四乙酸鈣二鈉。優選的用途是通過瘤內注射來治療腦腫瘤。