The present disclosure relates to a maleate salt of a benzothiophene compound, a crystalline form thereof, and a use thereof. Specifically, the present disclosure relates to a compound represented by formula (I-A), a crystalline form A thereof, a preparation method of a pharmaceutical composition including the same, and a use of the pharmaceutical composition in the preparation of drugs for preventing or treating diseases of the central nervous system. The compound represented by formula (I-A) and the crystalline form A thereof in the present disclosure have excellent physical and chemical properties, high oral bioavailability, excellent drugability, and are well-suited for pharmaceutical preparation, application, and preservation.