The present invention relates to a treatment device and a method for controlling the same, and provides a treatment device comprising: an insertion unit formed to be insertable in tissue after penetrating through a surface of the tissue； a displacement measuring unit for measuring displacement of the surface of the tissue, caused by an insertion of the insertion unit； and a control unit for controlling an insertion motion of the insertion unit on the basis of the displacement measured by the displacement measuring unit. According to the present invention, the device allows medical treatment in a state in which the insertion unit has been inserted to reach a precise position of a target, so as to improve an effect of medical treatment.
