SNS flexible passive protection device

The utility model relates to the field of slope protection equipment, in particular to an SNS flexible passive protection device which comprises multiple stand columns, a fixing assembly, a protection net and a traction assembly, the multiple stand columns are arranged at intervals, the fixing assembly is connected with the ends of the stand columns, the fixing assembly is embedded into soil of a hillside, and the traction assembly is connected with the protection net. The ends, away from the fixing assembly, of the stand columns are located outside soil and connected with anchor ropes, the ends, away from the stand columns, of the anchor ropes are fixedly connected with anchor rods, the anchor rods are embedded into the soil close to the mountaintop, the protective net is detachably connected between the adjacent stand columns and is a flexible net, and the traction assembly is fixed into the soil close to the mountaintop and connected with the top and the bottom of the protective net. The traction assembly