The utility model discloses an earthquake -resistant structure in light -duty house, including base, the main antidetonation body, the anti vibrating plate of level and a plurality of vertical antidetonation post, the main antidetonation body, the anti vibrating plate of level and vertical antidetonation post constitute by elastic material, main antidetonation body antidetonation body and the arc is orbed goes up the antidetonation body in the lower antidetonation body, the arc of halfpace shape are orbed, and the cambered surface diameter of going up the antidetonation body be lighter than in the cambered surface diameter of the antidetonation body, the bottom center of base is provided with the arc recess, goes up the antidetonation body and arranges in the arc recess, the horizontal rigid coupling of the anti vibrating plate of level is the antidetonation body and well antidetonation juncture physically under, the anti vibrating plate of a plurality of vertical antidetonation post levels of passing and the lower antidetonation body, its one end rigid coupling in base, the other end bury underground in the stratum under antidetonation is down personally experienced sth. Part of the body.