A fishing sinker combined with a bait case is disclosed. The fishing sinker includes a lower cap whose body forms a plurality of through-holes and an upper cap whose body forms a plurality of through-holes, in which the upper cap is assembled on the upper surface of the lower cap. The lower cap has a bolt insertion hole on the lower surface thereof. The upper cap forms a nut insertion hole on the upper surface thereof. A bolt is passed through the bolt insertion hole, and then the nut insertion hole such that one end of the bolt is protruded from the nut insertion hole, in which the one end of the bolt forms a thread on the outer surface thereof and the bolt forms a through-hole in its length direction, through which a fishing line is passed. A nut is tightened to the one end of the bolt, such that the upper cap and the lower cap can be fastened to one another. The fishing sinker combined with a bait case has advantages in that, since the bait case can contain the ground baits in order to attract fish, anglers do not need to scatter the ground baits on the water and the ground baits do not cause water pollution, thereby being pro-environments. Also, the bait case can contain relatively small stone, such as a pebble, and a lump of yellow soil, etc. performing a function as a sinker. Therefore, the fishing sinker combined with a bait case according to the present invention can be conveniently used.