Portable synchronous grid-connected box

The portable synchronous grid-connected box comprises a clamping assembly, the clamping assembly comprises a mounting piece, extending fins and wiring holes, the extending fins are arranged at the two ends of the mounting piece respectively, the extending fins are embedded into clamping grooves, the outer wall of the mounting piece is embedded into the inner wall of a wiring groove, and the wiring holes are formed in the outer wall of the mounting piece. The multiple clamping assemblies are arranged in a linear array mode in the length direction of the wiring groove. According to the grid-connected box, the paired mounting pieces are arranged to shield the through wiring grooves, when wires need to penetrate out of the corresponding positions, the corresponding mounting pieces are taken down, then the wires can penetrate through the wiring grooves, the positions which are not needed to be used are shielded by the mounting pieces, leakage is avoided, the use cleanness of the grid-connected box is ensured, and