The utility model discloses a nut burglary-resisting installation, including the cover cap, the bottom center trompil of cover cap is passed by the bolt, and the cover cap still includes the gland protecting the nut protection inside self, gland center also trompil is overlapped on the bolt equally, then the gland pressfitting forms a sealed chamber of protection nut at the last port of set cap, gland with the cover cap jointly. Cover cap internal diameter is greater than the nut external diameter, equals the external diameter of gland simultaneously. The gland is the perk that makes progress of marginal arc. The gland top is provided with the gland nut of same cover on the bolt. The utility model discloses greatly reduced worker's intensity of labour has solved traditional manual work mode of patrolling and examining in real time that relies on. Easy operation is swift, does not increase extra work load, only needs alone to accomplish fast in the short time. Greatly reduced the emergence of incident, played fine guarantee effect to safety in production, stable production.