Anti-torsion assembly and junction box

The utility model provides an anti-torsion assembly and a junction box. The anti-torsion assembly comprises an adapter and a connecting piece. The adapter comprises a first adapter block and a second adapter block, the connector cable is used for being installed between the first adapter block and the second adapter block, the first adapter block is used for being connected with the wiring piece, the first adapter block is provided with a plurality of first anti-twisting molded surfaces used for being attached to the wiring piece, the planes where the first anti-twisting molded surfaces are located do not coincide, and the second adapter block is provided with a plurality of second anti-twisting molded surfaces used for being attached to the wiring piece. Therefore, the adapter and the wiring piece are relatively fixed in position. The connecting piece is used for pressing the first adaptive block on the second adaptive block, so that the connector cable is pressed between the first adaptive block and the sec