SnS2-based　materials　have　been　intensively　explored　as　an　anode　for　sodium-ion　batteries.　In　the　present　study,　hierarchical　SnS2　microspheres　with　S　vacancy　have　been　successfully　synthesized　via　a　one-step　solvothermal　process,　and　it　is　found　that　the　amount　of　thioacetamide　in　the　synthetic　process　plays　an　important　role　in　morphology　and　amounts　of　S　vacancies.　A　series　of　results　calculated　from　density　functional　theory　has　indicated　that　the　introduction　of　S　vacancies　could　effectively　decrease　the　band　gap.　As　a　consequence,　the　hierarchical　SnS2　microspheres　exhibit　an　excellent　sodium　storage　performance,　and　a　large　capacity　of　486.2　mA　h　g-1　can　be　achieved　after　1000　cycles　at　1　A　g-1.　Copyright　©　2020　American　Chemical　Society.