PROBLEM TO BE SOLVED: To provide a method for performing a nerve cell implantation treatment to construct a new nerve cell network with existing nerve cells, i.e., the method for solving the problems: (1) immuno rejection (2) concern about the tumorigenic transformation of implanted cells (3) connection formation between the implanted nerve cells and host nerve cells.SOLUTION: The nerve cell implantation treatment method uses a capsule for nerve cell implantation, where a physiologically active substance with activity to attract axons is sealed together with the nerve cells for implantation. A plurality of holes by the size of 0.4-5 μm are arranged on the front surface of the capsule.