A connecting assembly (10) for a windshield wiper (10) includes a fixing member (11) and a supporting arm (12). The connecting assembly (20) includes a pivoting base (21) and a cover cap (22). The pivoting base (21) comprises an engaging portion (211) , a first insertion portion (212) and a second insertion portion (213) extending from the engaging portion (211) in opposite directions. The engaging portion (211) is engaged with the fixing member (11). The first insertion portion (212) and the second insertion portion (213) are symmetrical to each other with respect to the engaging portion (211). The cover cap (22) is assembled with the supporting arm (12) and put outside the first insertion portion (212) and the second insertion portion (213) in dual directions. Since the first insertion portion (212) and the second insertion portion (213) are configured to be symmetrical to each other, the supporting arm (12) can be firmly connected to the windshield wiper (10) with a changeable connecting direction.