The invention relates to an assembly device suitable for a double-glass assembly junction box. The assembly device suitable for the double-glass assembly junction box comprises an assembly part body, wherein the assembly part body is a cuboid assembly part body, wire leading openings are formed in the assembly part body, and the wire leading openings extend to the outer side of the assembly part body and are respectively provided with at least one groove which is used for arrangement of leads of a double-glass assembly. The assembly part body is adhered to a piece of back plate glass of the double-glass assembly, and the leads of the double-glass assembly are arranged in the grooves and led out of the grooves from the wire leading openings to be connected to the junction box. Compared with the prior art, the assembly device suitable for the double-glass assembly junction box has the advantages that no special junction box needs to be developed for the double-glass assembly, the connection of the leads can be achieved without drilling into the back plate glass, the structure is simple and reasonable, the assembly device can be produced in a batched mode, the rate of finished products is high, and therefore the production efficiency of the double-glass assembly is improved.