A production method of an isoxazoline-substituted benzoic acid amide compound of Formula (1) where X is a halogen atom, C1-6 haloalkyl, etc., Y is a halogen atom, C1-6 alkyl, etc., R1 is a C1-6 haloalkyl, etc., R2 and R3 independently of each other are a hydrogen atom, C1-6 alkyl, etc., R4 is C1-6 alkyl, C1-6 haloalkyl, etc., R5 is a hydrogen atom, C1-6 alkyl, etc., m is an integer of 0 to 5, n is an integer of 0 to 4, including: reacting an isoxazoline-substituted benzene compound of Formula (3) where X, Y, R1, m, and n are the same as defined above, L is a chlorine atom, a bromine atom, —C(O)OH, —C(O)J, etc., J is a halogen atom, with a 2-aminoacetic acid amide compound of Formula (2) where R2, R3, R4, and R5 are the same as defined above, or a salt thereof; crystal forms and the production method thereof.