Based on large-scale shaking table model tests, the influences of slope conditions on seismic displacement modes of gravity retaining wall and its change mechanism are studied. Two-step retaining types with gravity retaining wall and anchored lattice frame structure are used as slope retaining structures, and two slope models including base-rock slope and bedding rock slope with geometric scale of 1:8 are designed for large-scale shaking table model tests, Darui synthetic seismic wave and Kobe seismic wave are employed as the earthquake loads for the excitation of two slope models. T Four types of seismic displacement modes of gravity retaining walls of base-rock slope are: the outward rotation to the base, the slide-based coupling of the sliding from the slope and outward rotation to the base, the rotation-based coupling of the outward rotation to the base and sliding from the slope, the slide-based coupling of the sliding from the slope and the inward rotation to the base. Two types of seismic displacement modes of gravity retaining walls of bedding rock slope are: outward the rotation to the base, the coupling of the outward rotation to the base and sliding from the slope. The seismic displacement mode of gravity retaining wall occurs when the earthquake intensity is larger than VII. The slope condition, seismic wave type and its intensity have great influence on the seismic displacement modes and its change mechanism, but have slight influence on the relative displacement values of gravity retaining wall.