Abstract A series of compounds which contain pyrazole, thiazole and naphthalene ring (1a– 7a, 1b–7b, 1c–7c, 1d–7d) were firstly synthesized and their anti-proliferative activity, EGFR inhibitory activity, cytotoxicity and inhibition to Hela cell migration were evaluated. Compound 2-(3-(3, 4-dimethylphenyl)-5-(naphthalen-2-yl)-4, 5-dihydro-1H-pyrazol-1-yl) thiazol-4 (5H)-one (7d) displayed the most potent inhibitory activity (IC 50= 0.86 μM for ...