The utility model relates to a front cover structure of an explosion-proof thermal imager. The front cover structure includes a barrel body and a front cover fixedly connected with the barrel body, inner holes of inner sides of the front cover are equipped with a germanium substrate mounting seat, a germanium substrate, elastic pads, first jump rings and second jump rings, the germanium substrate mounting seat is fixedly connected with the front cover, the germanium substrate is mounted in inner holes of inner sides of the germanium substrate mounting seat, the elastic pads are also mounted in the inner holes of the inner sides of the germanium substrate mounting seat and are located on inner sides of the germanium substrate and abut against the germanium substrate, the first jump rings are clamped in the inner holes of the inner sides of the germanium substrate mounting seat and are located on the inner sides of the germanium substrate and abut against the elastic pad, the second jump rings are clamped in the inner holes of the inner sides of the front cover and are located on inner sides of the germanium substrate mounting seat and the elastic pads, the front cover has a grid-shaped thermal imaging window frame which is integrated with the front cover, and the grid-shaped thermal imaging window frame has a plurality of anti-net holes. The front cover structure of the explosion-proof thermal imager has the advantages that the structure is simple, the production cost is low and the production efficiency is high, and impact energy can reach 7J.