The disclosure concerns a method for resistance of epilepsy by suppressing the function of alpha 1G protein of T-type calcium channels, use of suppressor of alpha 1G protein for prevention or treatment for epilepsy, knockout mice resisting epilepsy by disrupting alpha 1G subunit of T-type calcium channel, and preparation method thereof. The .alpha.1G-knockout transgenic mouse can be used for investigating the relationship between diseases particularly neuropathy or psychopathy and the function of .alpha.1G T-type calcium channel via various behavioral tests since .alpha.1G subunit is mainly expression in central nervous system (CNS) and pheripheral nervous system (PNS). Further, the .alpha.1G-knockout transgenic mouse can be used for screening antileptic agents.