A photosensitive negative resin composition comprising a resin (a) having at least three cyclohexene oxide skeletons in its molecule, an onium salt (b)composed of a cation moiety structure represented by the following formula b1 and an anion moiety structure represented by the following formula b2, a silane compound (c), and an organic solvent (d): wherein R 1 to R 3 are, independently of one another, an organic group which may be substituted and has 1 to 30 carbon atoms, with the proviso that two or more oxygen atoms are included in all atoms constituting R 1 to R 3, R 1 and R 2, R 2 and R 3, and R 1 and R 3 may be bonded to each other directly or through a linking group to form a cyclic structure, R 4 is a hydrocarbon group which may be substituted by a fluorine atom and has 1 to 30 carbon atoms, X is a carbon atom, a nitrogen atom, a phosphorus atom or a boron atom, Y 1 is -S(==)O) 2 -, an alkylene fluoride group, * 1 -O-CF 2 -, * 1 -C(= O)-CF * 1 -O-C(= O)-CF * 1 -C(= O)-O-CF 2 - or a single bond, where * 1 designates an end bonded to R 4, n is 0, 1 or 2 and m is an integer when X is the carbon atom, with the proviso that a total of m and n is 3, n is O or 1 and m is an integer when X is the nitrogen atom, with the proviso that a total of m and n is 2, n is an integer of 0 or more and 6 or less and m is an integer when X is the phosphorus atom, with the proviso that a total of m and n is 6, n is an integer of 0 or more and 3 or less and m is an integer when X is the boron atom, with the proviso that a total of m and n is 4, and when m is an integer of two or more, any carbon atom in one R 4 -Y 1 - group of two or more R 4 -Y 1 - groups bonded to X may be bonded to any carbon atom in another one R 4 -Y 1 - group thereof through a single bond, thereby forming a cyclic structure. a resin (a) having at least three cyclohexene oxide skeletons in its molecule, an onium salt (b)composed of a cation moiety structure represented by the following formula b1 and an anion moiety structure represented by the following formula b2, a silane compound (c), and an organic solvent (d): wherein R 1 to R 3 are, independently of one another, an organic group which may be substituted and has 1 to 30 carbon atoms, with the proviso that two or more oxygen atoms are included in all atoms constituting R 1 to R 3, R 1 and R 2, R 2 and R 3, and R 1 and R 3 may be bonded to each other directly or through a linking group to form a cyclic structure, R 4 is a hydrocarbon group which may be substituted by a fluorine atom and has 1 to 30 carbon atoms, X is a carbon atom, a nitrogen atom, a phosphorus atom or a boron atom, Y 1 is -S(==)O) 2 -, an alkylene fluoride group, * 1 -O-CF 2 -, * 1 -C(= O)-CF * 1 -O-C(= O)-CF * 1 -C(= O)-O-CF 2 - or a single bond, where * 1 designates an end bonded to R 4, n is 0, 1 or 2 and m is an integer when X is the carbon atom, with the proviso that a total of m and n is 3, n is O or 1 and m is an integer when X is the nitrogen atom, with the proviso that a total of m and n is 2, n is an integer of 0 or more and 6 or less and m is an integer when X is the phosphorus atom, with the proviso that a total of m and n is 6, n is an integer of 0 or more and 3 or less and m is an integer when X is the boron atom, with the proviso that a total of m and n is 4, and when m is an integer of two or more, any carbon atom in one R 4 -Y 1 - group of two or more R 4 -Y 1 - groups bonded to X may be bonded to any carbon atom in another one R 4 -Y 1 - group thereof through a single bond, thereby forming a cyclic structure. wherein R 1 to R 3 are, independently of one another, an organic group which may be substituted and has 1 to 30 carbon atoms, with the proviso that two or more oxygen atoms are included in all atoms constituting R 1 to R 3, R 1 and R 2, R 2 and R 3, and R 1 and R 3 may be bonded to each other directly or through a linking group to form a cyclic structure, R 4 is a hydrocarbon group which may be substituted by a fluorine atom and has 1 to 30 carbon atoms, X is a carbon atom, a nitrogen atom, a phosphorus atom or a boron atom, Y 1 is -S(==)O) 2 -, an alkylene fluoride group, * 1 -O-CF 2 -, * 1 -C(= O)-CF * 1 -O-C(= O)-CF * 1 -C(= O)-O-CF 2 - or a single bond, where * 1 designates an end bonded to R 4, n is 0, 1 or 2 and m is an integer when X is the carbon atom, with the proviso that a total of m and n is 3, n is O or 1 and m is an integer when X is the nitrogen atom, with the proviso that a total of m and n is 2, n is an integer of 0 or more and 6 or less and m is an integer when X is the phosphorus atom, with the proviso that a total of m and n is 6, n is an integer of 0 or more and 3 or less and m is an integer when X is the boron atom, with the proviso that a total of m and n is 4, and