Abstract: In order to verify the structure strength and the stress distribution of the conical pick and the pick holder applied in the mine roadheader during the no rel ative movement and to study the failure causes, a 3D solid model and a finite element model of the pick and the pick holder was established.With the mesh division, loa d added and constraint, the computer simulation was applied to obtain the deformation and stress distribution cloud picture of the pick and pick holder.The analysis sho wed that under the performances, the failure of the pick would not cause by the strength and cause by the partial abrasion due to no rotation of the pick in the pick hold er, which caused the hard alloy falling off of the pick. The results showed the study conclusion and the actual conditions would be the same.