Abstract: A compound represented by formula (I), and a racemate, a stereoisomer, a tautomer, an isotopic label, an N-oxide, a hydrate, a solvate, a polymorph, a metabolite, a pharmaceutically acceptable salt, a pharmaceutically acceptable ester, or a prodrug compound thereof are provided. This class of compounds has a good LRRK2 kinase regulation and inhibition and can be used for the treatment of an LRRK2 kinase activity-associated conditions and diseases, such as proliferative diseases, protein kinase-associated diseases, lysosomal diseases, Tau diseases, and diseases caused by decreased dopamine levels. etc.