Abstract: A shock-absorbing frame structure for bicycle includes a front frame unit formed of a head tube, a down tube, a seat tube, and a top tube, a bottom forks unit pivoted to the front frame unit, and a shock-absorbing device coupled between the front frame unit and the bottom forks unit, the seat tube having a seat pillar for holding a saddle and a top end for holding a seat back, the bottom forks unit including two bottom forks, and a connector connected between the bottom forks at a front side and pivoted to a bottom lug at the front frame unit, a cross tube connected between the bottom forks on the middle, an upward lug formed integral with the cross tube to support the shock-absorbing device, and an arched frame rod bridging the bottom forks at a rear end for the mounting of a luggage-carrier and a rear fender.