The present invention relates to a naphthylamide compound of the structure as represented by formula (I), medicinal salts, prodrugs and hydrates or solvates thereof, and also relates to a method of preparing the compounds, pharmaceutical compositions comprising the compounds and the uses thereof as protein tyrosine kinase inhibitors, particularly as VEGFR-2 inhibitors, in preparing drugs for preventing and treating diseases related to abnormal angiogenesis.