An electricity connection box includes a housing which includes a first insertion port and a second insertion port, a first connection portion group made of connection portions which are provided inside the housing and to which electric wires of a first electric wire group are connected, and a second connection portion group made of connection portions which are provided inside the housing and to which electric wires of a second electric wire group are connected. The first electric wire group is inserted through the first insertion port, and the second electric wire group is inserted through the second insertion port. The first connection portion group is closer to the first insertion port than the second connection portion group. The second connection portion group is closer to the second insertion port than the first connection portion group.