The present invention is provided with EGFR inhibitory activity and with the noval chemical compound of cell growth inhibition effect. A kind of medicament is also provided, with EGFR inhibitory activity, therefore available what prevention and/or treating cancer. The compound or its salt indicated by leading to formula (I).本發明提供具有EGFR抑制活性並且具有細胞生長抑制效果的新化合物。還提供一種藥劑,其具有EGFR抑制活性,因此可用於預防和/或治療癌症。由通式(I)表示的化合物或其鹽。