An electrical connection assembly includes a first electrical member and a locking structure configured to lock the first electrical member to a second electrical member cooperating with the first electrical member. An adjusting sleeve is sheathed on an outer surface of the first electrical member and movable along an axis of the first electrical member. A collar is sheathed on an outer surface of the adjusting sleeve. A connecting bracket is rotatably connected to the collar. The second electrical member includes a first end coupled to the first electrical member and a second end opposite to the first end. The connecting bracket is rotatable to the second end of the second electrical member for limiting the second end of the second electrical member.