A connector assembly and a jumper connector thereof are provided. The jumper connector includes a first jumper connector body case for being coupled to a first board edge connector, a second jumper connector body case for being coupled to a second board edge connector, and conductive terminals. The first and second jumper connector body cases are coupled to each other to form an internal receiving space for accommodating the conductive terminals, and the conductive terminals are movable to correspond in position to the first and second board edge connectors respectively. By such structural design, even if circuit boards incur problems like poor processing quality or position offset, the jumper connector according to the present invention can still effectively bridge and join the board edge connectors on the circuit boards, thereby desirably accomplishing electrical connection between multiple circuit boards on electronic equipment.