The invention discloses a leading-out device for an NVME (Non-Volatile Memory express) RAID (Redundant Arrays of Independent Disks) key interface of a server main board. The device includes a plurality of coiling boxes. Each coiling box includes a cylindrical box body composed of a housing and an end cover. Each box body is therein provided with a winding wheel in rotary connection with said box body. Each winding wheel is provided with a wiring groove penetrating through said winding wheel in the radial direction. Each wiring groove is provided with a Dupont wire and the middle part of said Dupont wire coils the winding wheel. Two ends of each Dupont wire protrude from the outer part of the corresponding box body. One end of each Dupont wire is connected with the NVME RAID key interface in the main board while the other end extends to the outer side of the server. In this way, when changing different NVME RAID keys for different RAID modes, the server does not need to dismount frequently, so that testing efficiency is improved.