Some minor oonstitnents, eight ellagio acids and syringio acid, were isolated from the fruits of Camptotheca acuminata Decne.Their strnotures were elucidated by means of spoctral analysis and chemical conversions as 3, 4'-O-dimethylellagio acid(Ⅰ),3, 3', 4-O trimethylellagio acid (Ⅱ),3'-O-methyl-3, 4-O, O-methylideneellagio acid (Ⅲ),3, 4-O, O-methylideneellagio acid (Ⅳ) (C₁₅H₆O₈, m.p.301-303℃ (decomp.)),3', 4'-O-dimethyl-3, 4-O, O-methylideneellagioaoid(Ⅴ) (C₁₇H₁₀O₈, m.p.315-318℃),5'-methosy-3', 4'-O-dimethyl-3, 4-O, O-methylideneellagio acid (Ⅵ) (C₁₈H₁₂O₉, m.p.232-234℃),3, 3', 4, 4'-0-tetramethyl-6'-methoayellagio acid (Ⅶ) and 5'-hydroay-3', 4'-O-dimethyl-3, 4-O, O-methylideneella,gio acid (Ⅷ) (C₁₇H₁₀O₉, m.p.258-260℃).Among them Ⅰ Ⅴ, Ⅴ, Ⅵ, Ⅷ are new compounds, and the occurrence of Ⅶ in nature is first reported.