Magic tape type geotechnical cloth for a tunnel is of a double-layer structure. One layer is a first geotechnical cloth layer made of fine-denier chemical fibers through a nonwoven process, and can achieve the functions of filtering, water drainage and protection. The other layer is a second geotechnical cloth layer made of thick-denier chemical fibers through a nonwoven process, and a rich ring-shaped suede face or a hook-shaped suede face is formed on the surface of the second geotechnical cloth layer through a special needling process and can adhere to magic tape, so that pasting type paving and hanging fixation is achieved through the geotechnical cloth and a water proofing board, a water drainage board and a water proofing and water drainage board with the surface compounded with the magic tape. Construction is convenient, the water proofing board, the water drainage board and the water proofing and water drainage board matched with the geotechnical cloth are paved and hung tightly and firmly, no hanging interval exists, the water proofing board, the water drainage board and the water proofing and water drainage board is prevented from being damaged, and the installation effect and the water proofing and water drainage effects of the water proofing board, the water drainage board and the water proofing and water drainage board of the tunnel are ensured.