The invention provides compounds as CDK small-molecule inhibitors and uses thereof, the compounds can be used for treating inflammation and cell proliferation diseases. The novel compound of the invention is a powerful cyclin-dependent kinase 4 (CDK 4) or cyclin-dependent kinase-6 (CDK 6) inhibitor.本發明涉及新的作為CDK類小分子抑制劑的化合物(如式(I)所示)及其用途,還涉及含有上述化合物的藥物組合物,以及這些化合物和組合物在治療過度增殖性紊亂的疾病的用途。本發明的新化合物是有力的細胞週期蛋白依賴性激酶4(cdk4)或細胞週期蛋白依賴性激酶6(cdk6)抑制劑。