Relay and fuse matched wiring harness terminal secondary locking structure

The utility model relates to a secondary locking structure for a wiring harness terminal matched with a relay and a fuse. The secondary locking structure comprises the relay, a relay socket, a secondary locking piece and the wiring harness terminal, wherein the relay seat is provided with a plurality of butt joint cavities, and each butt joint cavity is internally provided with an anti-falling buckle; when the wire harness terminal is inserted into the relay socket, the wire harness terminal is in clamping fit with the anti-falling buckle. The lower end face of the secondary locking piece is provided with a plurality of locking insertion strips extending downwards. The locking insertion strips are in one-to-one correspondence with the butt joint cavities; after the secondary locking piece is installed into the relay socket, the locking insertion strip abuts against the back face of the anti-disengaging buckle. The horizontal end face of the secondary locking piece is further provided with a plurality of verti