Detachable antenna magnetic core protective cover and while-drilling device applying same

The utility model relates to a detachable antenna magnetic core protective cover and a while-drilling device using the same, the protective cover comprises a protective cover body and a plurality of connecting assemblies fixed on the protective cover body, the plurality of connecting assemblies are arranged on two opposite sides of the protective cover body along the axial direction of a drill collar body; the connecting assembly is used for being connected and matched with a drill collar body, one end of the connecting assembly is detachably connected with the drill collar body in a limiting mode, and the other end of the connecting assembly is detachably and fixedly connected with the protective cover body. According to the detachable antenna magnetic core protection cover, the mechanical strength of the drill collar can be guaranteed, fixation of the antenna magnetic core protection cover is protected secondarily, and the antenna magnetic core protection cover can be detached, repaired and maintained conve