The invention provides a side vehicle-body structure of a vehicle. The structure comprises side plates, a rear-wheel chamber portion, a base plate, and a load transmitting member on an inner side of a vehicle width direction of the side plates. The side plates form side surfaces of a vehicle body on the rear of a rear vehicle door opening. The rear-wheel chamber portion is disposed on the side plates rising towards the inner side of the vehicle width direction. The base plate is disposed between a pair of a left side plate and a right plate. The load transmitting member comprises a rising face portion rising from a floor panel and a facing face portion facing a portion of the side panel between a rear edge portion of a rear-door opening portion and a rear-wheel house portion and having its short longitudinal width is arranged on an inward side of a side panel. The load transmitting member is fixed to a front portion of the rear-wheel house portion directly or via a bracket. The load transmitting member can be arranged so as not to prevent a smooth ingress/egress action of a passenger, and a proper load-transmission function of the load transmission member when the impact load is inputted to a rear door from the vehicle side can be attained so as to effectively restrain the rear door from coming into a vehicle compartment.