A surface protective film comprising a base film and a resin film formed thereon, said resin film being formed of a resin composition comprising components to: a silphenylene-siloxane skeleton-containing resin represented by the formula and having a weight average molecular weight of 10,000 to 100,000, a compound capable of reacting with an epoxy group in the silphenylene-siloxane skeleton-containing resin to form a crosslinked structure, a curing catalyst, and a parting agent selected from the group consisting of polyethylenes, silicone compounds, fluorine compounds, fatty acids, and fatty acid esters, in an amount of 0.5 to 20 parts by weight per 100 parts by weight of component, wherein R 1 to R 6 are each independently a C 1 -C 20 monovalent hydrocarbon group or alkoxy group, a, b, c, and d, indicative of compositional ratios of corresponding repeating units, are positive numbers satisfying: 0 < a < 1, 0 < b < 1, 0 ≤ c < 1, 0 < d < 1, 0.35 ≤ a+c ≤ 0.65, 0.35 ≤ b+d ≤ 0.65, and a+b+c+d=1, g is an integer of 0 to 300, X is a divalent organic group having the formula: wherein E is a divalent organic group selected from the following: s is 0 or 1, R 7 and R 8 are each independently a C 1 -C 20 monovalent hydrocarbon group or alkoxy group, t and u are each independently an integer of 0 to 2, and Y is a divalent siloxane chain having the formula: wherein R 9 to R 14 are each independently a C 1 -C 20 monovalent hydrocarbon group or alkoxy group, and j is an integer of 0 to 300. a silphenylene-siloxane skeleton-containing resin represented by the formula and having a weight average molecular weight of 10,000 to 100,000, a compound capable of reacting with an epoxy group in the silphenylene-siloxane skeleton-containing resin to form a crosslinked structure, a curing catalyst, and a parting agent selected from the group consisting of polyethylenes, silicone compounds, fluorine compounds, fatty acids, and fatty acid esters, in an amount of 0.5 to 20 parts by weight per 100 parts by weight of component, wherein R 1 to R 6 are each independently a C 1 -C 20 monovalent hydrocarbon group or alkoxy group, a, b, c, and d, indicative of compositional ratios of corresponding repeating units, are positive numbers satisfying: 0 < a < 1, 0 < b < 1, 0 ≤ c < 1, 0 < d < 1, 0.35 ≤ a+c ≤ 0.65, 0.35 ≤ b+d ≤ 0.65, and a+b+c+d=1, g is an integer of 0 to 300, X is a divalent organic group having the formula: wherein E is a divalent organic group selected from the following: s is 0 or 1, R 7 and R 8 are each independently a C 1 -C 20 monovalent hydrocarbon group or alkoxy group, t and u are each independently an integer of 0 to 2, and Y is a divalent siloxane chain having the formula: wherein R 9 to R 14 are each independently a C 1 -C 20 monovalent hydrocarbon group or alkoxy group, and j is an integer of 0 to 300. wherein R 1 to R 6 are each independently a C 1 -C 20 monovalent hydrocarbon group or alkoxy group, a, b, c, and d, indicative of compositional ratios of corresponding repeating units, are positive numbers satisfying: 0 < a < 1, 0 < b < 1, 0 ≤ c < 1, 0 < d < 1, 0.35 ≤ a+c ≤ 0.65, 0.35 ≤ b+d ≤ 0.65, and a+b+c+d=1, g is an integer of 0 to 300, X is a divalent organic group having the formula: wherein E is a divalent organic group selected from the following: s is 0 or 1, R 7 and R 8 are each independently a C 1 -C 20 monovalent hydrocarbon group or alkoxy group, t and u are each independently an integer of 0 to 2, and Y is a divalent siloxane chain having the formula: wherein R 9 to R 14 are each independently a C 1 -C 20 monovalent hydrocarbon group or alkoxy group, and j is an integer of 0 to 300.