The present invention in particular relates to a class of compounds for treating nervous system diseases, the compounds are the compound as shown by formula (I) or a stereoisomer, a geometric isomer, a tautomer, a solvate, a metabolite, a pharmaceutically acceptable salt of the compound as shown by formula (I) or a prodrug of the compound (I). The present invention also relates to a pharmaceutical composition comprising this class of compounds, and the use of the compounds and pharmaceutical composition.