The invention discloses a roof anti-seismic structure and an installation process thereof, and belongs to the technical field of building engineering roof anti-seismic. The roof anti-seismic structurecomprises double T plates arranged on a cross beam and a wall body, the tops of the double T plates are connected with angle steels for reinforcing the connection between the double T plates, the tops of the double T plates are pre-embedded with a plurality of sets of connecting parts, each set of connecting parts is composed of two connecting parts, the angle steels are welded and fixed with theconnecting parts, and a damping mechanism is arranged in each connecting part; a damping block is provided with a cavity, a damping mechanism comprises an elastic steel plate arranged in an arc shapein the cavity, and a plurality of damping springs which are vertically arranged are fixedly arranged between the bottoms of the elastic steel plates and the bottoms in the damping blocks. The installation process of the roof anti-seismic structure comprises the following steps that S1, the connecting parts are pre-embedded in the double T plates; S2, the double T plates are installed on the crossbeam and the wall body; and S3, the angle steels, the double T plates and the wall body are fixed. The roof anti-seismic structure has the advantages that the anti-seismic performance of the roof canbe enhanced, and the anti-seismic mechanism is convenient to install.